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PARTS YOU NEED, AT THE PRICE YOU WANT.

50cc 139QMB and 139QMA four-stroke
 most popular
QMB139 50cc 4T OEM 139QMB -50cc Stock Parts 4T Also known as the GY6 50cc. It also goes by several other names such as 50QTB. This Chinese 49/50cc engine is used on many of the 4-stroke imported scooters including the new VIP Future Champion, KYMCO 4 stroke units. Some common brands and names being imported are: Shanghai Shenke, EVO 50cc, Zongshen Metro 50cc, Baja Powersports (PEP BOYS made by Zongshen) Baja SC50, Strada RX 50 (4 stroke) Powersports Factory, Jalon JL50QT-21, Falcon and JL50QT-15, JL50QT-16 , Pantera Freedom, Fusion and Retro, TaoTao GT5, Fastwind,  atm50-a1, cy50-a, cy50-b, cy50-t3, funny 50, Roman 50, Retro 50, Speedy 50, Venus 50. Verucci VC50TS-3M, Sunl SL50QT-16, SL50QT-16, SL50QT-18, SL50QT-2, SL50QT-3, Roketa Bahama, Maui, Sicily, Tank, Baotian 50QT-9, Baotian, 50QT-11, Dotera 50QT-11, Jalon JL50QT-18, Sinski XSJ50QT-6, Sinski XSJ50QT-B, Taishan Commuter, Baja motorsports SC-50 sun city, primo,  Taishan Sport Zhong Hu 50cc 4t This kit will fit most 4 stoke 50cc horizontal style (139QMB) Scooter, Moped, ATV 4-stroke air-cooled engines / motors that are being made and imported from Asia, China, Taiwan, Japan, Korea, etc. like kymco agility , baotian This kit will fit : BAOTIAN BT49QT-2 BAOTIAN BT49QT-7 BAOTIAN BT49QT-9 BAOTIAN BT50QT-9 BAOTIAN BT50QT-11 BAOTIAN Ecobike BENZHOU YY50QT BENZHOU City Star 50 BUFFALO Wind ERING Sprint 50 JIN LUN JL50QT KARCHER KM 50 Kreidler Flory 50 Kymco Agility 50 Kymco Agility MMC 50 Kymco Filly 50 Kymco Vitality 50 KYMCO Filly KYMCO Nexxon 50 KYMCO People KYMCO Super 8 KYMCO Vivality KYMCO NEW DINK 50 KYMCO Yager KYMCO Yager GT MSK Ecobike 50 PEUGEOT V-CLick REX Capriolo 50 REX Flory REX RS 450 REX RS 500 REX Off Limit 45 RIEJU Paseo 50 RIEJU Toreo 50 Sachs 49er 50 Sachs Bee SANILI TS50QT-4 QUINGQI QM50QT-6A XINLING ZHONG YU 50 QT-5 ZHONG YU 50 QT-7 ZHONG YU ZY 50QT ZHONGSHEN Wind 25/50 ZHONGSHEN ZS50QT-4 50, Baron 50, Fly Scooters, Pep Boys, Baja, Vento, Tank Sports, Roketa, Gamax Spillo, quingqi koala qm50qt-6d, United Motors, Longbo, Linhai, Velocity 50, 49cc, Jmstare Accipiter 50, Quingi koala qm50qt-6d, jmstar breeze 50, jonway warrior 50, jmstar eagle 50, and many more..... this list is continually growing.


Standard parts below, performance parts here
139QMB parts fiche here.

669-18-30 DRIVE BELT
This is the standard replacement belt for your 139QMB shortcase engine. Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. GY6 139QMB.  Shortcases normally have 10" wheel on the rear. Cheaper than cheap? You bet, priced to get you back on the road fast. $14.95


729-17.7-30 DRIVE BELT
This is the standard replacement belt for your 139QMB long case engine. Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. GY6 139QMB. Longcases normally have a 12-16" diameter rear wheel. Same as the above belt, same great deal. Get 'em while they last. $14.95
 

BELT/VARIATOR FAN
Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. GY6 139QMB. Whenever your belt breaks this fan is likely damaged. If you don't replace it, the belt runs hot and it breaks again. Don't repeat the cycle, do it right the first time, every time, at the right price, every time. $4.99

 
836-17-30 QJ belt for Baja SC-50 and Vento Triton
This is the ultra rare, hard to find 836 belt that you must use on your QJ1P39QMB-3 engine code. Some have mistakenly called this a 835-17-30. This is a strange amalgamation of 2stroke transmission CVT components mated to a modified 50cc 4stroke engine case. These are the shorter belts. If you've got a Baja SC50 Sun City or maybe another with this engine, you need this belt. $24.95

891-17-30 drive belt
 
Wonders never cease. We've got the belt that no else has, or even know exists. These fit the QJ anomoly engine found in MotoMojo, Vento Triton. These are the longer belts. Get 'em here, and get 'em fast as we ship same day at unbelievable wholesale prices. $24.95 

Gates Powerlink 669-18-30
 
For those of you who don't like fixing broken belts on the side of the road, spend the extra couple of bucks and get a Gates. $24.95

Gates Powerlink 729-17.5-30
 
For those of you who don't like fixing broken belts on the side of the road, spend the extra couple of bucks and get a Gates. $29.95


Accurate GY6 dipstick
Accurate dipstick for all GY6 50, 125, and 150cc scooter engines. $4.95 If your dipstick isn't accurate, you could cause major engine damage.

STANDARD REPLACEMENT CDI
This is the standard replacement CDI for all of the AC fired pulsed GY6 chinese engines. The AC fired is the most common on over 95% of all engines. If your not sure, go to the TechTalk with MO! He may help. This has the 4 pin and 2 pin connector that is most common. Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. GY6 139QMB. Standard part at a standard price. $9.95


STANDARD REPLACEMENT IGNITION COIL
This is the standard replacement coil for just about every 4stroke GY6 chinese engine out there. Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. GY6 139QMB. This part fails just as often as the CDI, so stock up at a stocking price. Just $9.95

18MM CV CARBURETOR
This is a quality replacement carb for all 4stroke 139qmb 49/50cc chinese engines, NOT the junk that came with your scooter, it's got a larger venturi, accelerator pump, and quality construction. Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. GY6 139QMB. This is usually a better unit than your stock one, so you may think about using this one instead. This carb comes with an accelerator pump which often eliminates hesitation whenver you pull the throttle open fast. Comes complete with electric choke, accelerator pump, and pre-tuned jetting for the most common settings. Unbeatable unit at an equally unbeatable price. $39.95 

INTAKE MANIFOLD
Engine running erratically or not wanting to stay at idle? It could be your intake manifold boot. The rubber gets a crack in it allowing air to enter without picking up fuel at the carb. This fits all GY6 139qmb 4strokes. Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. GY6 139QMB. Easy 2 bolt installation and vacuum line nipple. $9.95

Dual port intake manifold
 Here's a 2 vacuum port intake manifold for those of you that need the extra vacuum line. Not found anywhere else for any price. $14.95 Remember, if your intake manifold is leaking, it will cause poor starting and erratic idling.
IGNITION KEY SET KIT (SUNNY STYLE)
Somebody try to steal your bike? Get your stolen bike recovered just to find the ignition ravaged? Broke your key of inside? Just plain lost your keys? This is the quick, easy, affordable, and right way to correct these problems. This kit comes complete with the "Sunny" style ignition (see chassis styles in "chassis parts") Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. Locking gas cap, seat lock, mount, seat latch and cable, and of course a set of two keys so you can use one, and store one, just in case. This ignition has the 6 pin style connector with 4 wires. This can be modified to work with alot of different systems, however match the mount style in the picture to your application. We also have others types available, as well as locking gas caps separately. This kit is priced to surprise at just $44.95!

IGNITION KEY SET (HANDSOME BOY STYLE)
This is the igntion key set kit like the one above, except it fits the Handsome boy style scooters, Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. This kit includes the ignition key switch, seat latch and lock, glove box lock, and all mounting clips. This have the four prong square connector. Comes with a spare key in case you lose one. Not to be mistaken for others, check out this price.  $44.95

VACUUM OPERATED FUEL VALVE PETCOCK (TANK MOUNT)
These are always suspect, get 'em replaced. If the diaphram inside this unit fails it will override your carb float valve and flood the engine to the point that it will actually lock-up while sitting overnight. Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. GY6 139QMB. This is the type that screws onto the bottom of your fuel tank. $14.95


IN-LINE VACUUM FUEL VALVE
If you don't have the above tank mount fuel valve, you likely have this inline type. Easy to install on any vehicle of any type. Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, Adly as well as others. GY6 139QMB. Has a single bolt mount for easy installation. Easy on the price too. $14.95

49/50cc ELECTRIC STARTER MOTOR W/LEAD
Replace that worn out or burnt out old starter motor with one that will turn your engine over quick and easy. Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. GY6 139QMB. These are an easy two bolt replacement unit with lead wire. This is a direct replacement on all gy6-50 139qmb 4stroke scooter/atv engine. Unbelieveable low overstock sale price. Won't last long at only $24.95!!! 
COMPLETE TOP-END REBUILD KIT FOR 139QMB
This is everything your going to need to rebuild that tired and worn out engine with low compression. This kit includes the cylinder, piston, wrist pin, rings, circlips, head gasket, base gasket, and even a new exhaust gasket! Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. GY6 139QMB. Good quality Chinese components at a downright good price. Buy this entire kit for less than everyone else sells just the cylinder. $49.95
Order options
Piston/ring set
This is a complete 39mm piston/ring set that also includes the wrist pin and circlips. Just in case you don't need to replace the cylinder also, here it is for only $19.95

39mm 50cc ring set
Full set of replacement rings for standard 39mm bore on GY6-50cc scoot engines.  $9.95

44mm top end kit
Wonders of all wonders. ScrappyDogs now has a complete top end rebuild kit for those VIP, Peace, and other brands that use the 44mm piston instead of the normal 39mm. This can also be used as an affordable 60cc big bore kit (one size down from the 47mm, 72cc kit) affordable, good quality, and in stock! $59.95. Kit includes cylinder, piston, rings, circlips, gaskets, wrist pin as shown. 

44mm piston/ring sets
 
Complete piston ring set for your VIP and Peace sports scooters who use the 44mm size. This also fits the 60cc big bore kits. Moly coated piston and all components are top quality. $24.95

44mm ring set
 
44mm ring set for the small big bore kits, and for some stock scooters that come with this larger bore like VIP Future Champion, Peace sports, and others. Ever wonder why these were a little faster than most others? $9.95 

44mm top end gasket set
Head and base gasket set for the 44mm 139qmb engines. These are often in Peace sports, VIP's, etc. $9.95 

Complete assembled 139qmb cylinder head
 
50cc fourstroke complete assembled head with valves, springs, and everything installed, ready to slap on. Cheap and easy at only. $44.95

139qmb higher head assembly
 Leave it to the Chinese scooter industry to have some oddball variant part. These are commonly referenced as the higher head 69mm head assembly. Absolutely no way of distinguishing from the outside, but some newer scooters have this head, which is not interchangeable with the standard head above. Once cam cover is removed, you will be able to see that the valve springs project above the gasket surface more than the standard head. If in doubt, you likely have the standard head. Only place this part is available. $54.95 
139qmb GY6 50cc scooter moped valves springs clips kit

This is a brand new quality complete valve/spring assembly kit for your 50cc scooter/atv/buggy chinese engine found in many brands like Tank, Roketa, JMstar, Jonway, Vento, TNG, VIP etc 

This kit includes it all, both valves, inner and outer springs, retainers, caps, valve seals, even new tappet adjusters! $29.95



Camshaft retaining frame and rocker arm assembly
 
Camshaft holder frame complete with new rocker arms, adjusters, shafts, etc. Only $29.95! 

139qmb higher head rocker arms
 Replacement rocker arm assembly for the higher head 69mm valve head assemblies found on some late model chinese 139qmb gy6-50cc scooters and atv's. $29.95
139QMB valve cover
 
Brand new 4 bolt valve cover for the 4stroke 50cc scooter/atv engines. These are for non-EGR heads. Complete with vent spigot and labrynth. Ready to bolt on. $19.95

EGR valve cover
 
Complete ready to install, fully assembled, EGR valve cover for gy6-50. $29.95

Cam cover gasket/o-ring
 
Tough to find replacement gasket for your 139qmb (same gasket for both EGR and non-EGR,  and 150 (both EGR and non-EGR available) . $4.95 
choose your type

STARTER CLUTCH BENDIX
Having trouble getting your starter to engage in order to turn the engine over? It may very well be your starter clutch not fully engaging. Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. GY6 139QMB.  Get that old part out and put in the new, at a new low price. $14.95 

KICK STARTER LEVER
Brand new kickstart lever to replace that used up one, or simply to replace the one that fell off! Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. GY6 139QMB. Don't fall out of your chair when you see this price! $14.95 


KICK START IDLER GEAR
Name:When you gotta have it you know where to go. Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. GY6 139QMB. At scrappydogscooters.com you get the part you need, at the price you want.  $14.95 


KICK STARTER SHAFT
This part has the kick starter shaft, half gear, and inner bushing complete. Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. GY6 139QMB. Better do it now before it gets worse. Priced to persuade at $14.99 

Kick start spring
 
This is what you need to get that sagging or broken spring back into action. $7.95 

kick shaft bushing
Replacement kick start shaft bushing that fits in the belt cover. $2.99 

Kick start gear clip
 Clip that holds the kick start shaft in place. Small but necessary part. Don't be without when it only costs $.99! outer diameter 15.7mm
kick start shaft washer
 Another small little part that always gets lost, but cannot be left out. This is critical for proper kick start shaft spacing and proper wear. Trying to save $.99 cents could cost you more in worn parts and aggravation.
Outer Diameter: 20.9mm, Inner Diameter: 14mm
Hot swap assembled belt cover
How cool is this? Completely assembled belt cover with all the kick start components already installed for you. Great for shops wanting to save labor time, or the backyard mechanic wanting to save aggravation. Includes lever, shaft, idler gear, springs, etc. Cost of this assembly is less than the sum of all the parts in total! $74.95 Comes in long and short case.
choose your length

STATOR GENERATORS (5wire) AND FLYWHEEL ROTORS
Stator/generators are a common malfunction on the little Chinese engines. The 6 and 8 pole will work on any 139qmb (and many others like 2strokes) as long as you have a matching 6 or 8 pole flywheel rotor, and have 5 wires. If you don't have to replace your rotor, then be sure and get the number of poles that matches your rotor. The plugs on these has two singles and a 3 slot connector, however only 3 are used. The wiring is easily modified to fit your existing system. The 3 wire is coded green, yellow, and white. This set includes the ignition pickup also.  GY6 139QMB.  Way to go at  $34.95
pick your part

8 pole/4wire dual ignition stator    
 
This is the 4 wire stator with the two wrapped coil windings often found in Baja and Peace Sports scooters and others. Please look at the picture and the plug style to ensure proper fit. These are pretty hard to find. Get yours in 2-3 days anywhere in the US! $29.95

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DC fired stator assembly
Where else are you going to find these? DC fired stators are found on many high end scoots and ATV's like Lance and Tomos. These have a yellow, white, and blue wire. $34.95 

Magneto flywheel rotor
Replacement quality flywheel rotor for your stator. These come in 6,8, and 11 pole for 50 and 150 GY6 type engines. One good low price. Don't let demagnatization of your flywheel drive you nuts in your diagnosing of charging or running problems. $24.95 
choose your type

139qmb Flywheel rotor puller tool
 
This is a good quality flywheel puller tool that works on the 139qmb 50cc  GY6 based scooter/atv engines. Do it right, and do it cheap at only $19.95!

COMPLETE VARIATOR (front clutch) SET
This is a complete variator clutch set to replace your worn out unit. This is complete with face housing, ramp, glide keys, rollers (standard 8.5g), and slide bushing. If one part is worn out, it's likely the others are too. This kit now comes complete with the outer plate gear, fan, and star retainer for the same great low price. Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. GY6 139QMB. Don't take a chance on replacement or price. $34.95

COMPLETE CLUTCH/PULLEY/BELL HOUSING SET
This is the entire set, nothing to worry or guess about. This set includes the clutch, torque spring, clutch springs, pulley sheaves, and bell housing completely new and completely assembled ready to install. Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. GY6 139QMB.  WOW!
$44.95 

Variator glide key guides
 
Petty little part, but utterly indispensable if they are worn, broken, or missing. Good parts with quick shipping. $2.95

COMPLETE GASKET SET FOR 139QMB ENGINE
This set has all the gaskets you need in your engine. Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. GY6 139QMB. What more is there to say? Maybe the price $9.95! 


EXHAUST GASKET RING
Stop that loud obnoxious sound from underneath your engine. Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. GY6 139QMB. Cheap and easy fix at $3.95 

139qmb engine oil seal kit
 
Wow, we've even got this? Get it all here, and get it cheap. All the seals necessary to get your scoot oil tight. $14.95 

FLYWHEEL ENGINE COOLING FAN
If this fan is faulty or missing, you're engine will overheat and get ruined. Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. GY6 139QMB. Make sure yours is correct and in place. $7.49

Carburetor pilot idle jets (upgraded and standard)
This is that little jet that causes so much trouble. If your bike is stumbling off idle, won't run when warmed up, or has been sitting for a long time and won't stay running, replace this jet and cure the problem. We also have these in upgraded sizes, like #38 and #40 (stock is #35). The larger size makes starting easier, and off idle power increased. Easy swap and cheap fix. #40 is for the real hard starters. $4.95 
choose your size

139QMB 50cc carburetor main jet
Main carburetor jet for the high speed circuit. Get it replaced here cheap. These come in three different sizes: standard, #75, #80, #85, the popular #88, and the gas guzzling #95 75 and 80 are good for exhaust upgrades, etc, but still stock air box. 85 and 88 are for air filter upgrades. 95 for major stuff. Cheap at only $3.95
choose your size

139QMB 50cc Crankshaft
Completely brand new better than stock crankshaft with bearings for your 4stroke 50cc scooter/atv engine. We even include NPM Viton oil seals with every crank kit! $49.95 Note: we also are now the exclusive carrier of the rare 22 tooth (oil pump drive) crank. 99% of the 139qmb engines are 16t, but some are 22t. Simply pick 22t or 16t during checkout below for this special crank.
choose your tooth count
Intake manifold insulator gasket
This is that pesky little insulator between the manifold and the head that often cracks and causes you trouble in poor running. $2.95 

Carburetor diaphragm
Having trouble getting full speed? You've likely got a torn/leaky slide diaphragm. The are normally 18mm in diameter, we also have these in the older, less common, 16mm size. $7.95
pick your size

Carburetor complete rebuild kit
This is everything you need to put the life back into your old carb and get it fixed. Main jet, pilot idle jet, air screw, spring, seal, seat, float, float valve, float pin,gasket, needle and clips. $9.95


Accelerator pump diaphragm
These are available exclusively here at ScrappyDogs. Accelerator pump diaphragm for the 139qmb standard carburetor will replace that often torn one that causes so much trouble. We've got 'em in stock for quick delivery. $3.95 

ACV carburetor valve kit
It's taken some time, but we've finally got some of these in stock. The ACV (air control valve) is located on the side of the carburetor. The function is to enrichen the mixture when you close the throttle, preventing backfires when decelerating. What it also means when it malfunctions, is an annoying poor running condition with black soot all over your plug, among other symptons. You professional mechanics know about this valve, and have longed for one for a long time, so here they are! Comes with the complete kit as shown. $7.49

AUTOMATIC ELECTRIC CHOKE/ENRICHENER
Engine not starting well? Engine running heavy and rich and eventually dying out when it begins to warm up? This is likely the fix. Easy one screw replacement. Fits all Chinese 4stroke carburetors and most 2stroke ones also. Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. GY6 139QMB and 157QMJ. You can afford this one at $9.95

139QMB GY6 50cc scooter moped flywheel woodruff key

This is a brand new quality flywheel woodruff locator key for your 50cc scooter/atv/buggy chinese engine found in many brands like Tank, Roketa, JMstar, Jonway, Vento, TNG, VIP etc 

These are easy to loose, not to mention irriitating when you can't find it. Get it fast with ScrappyDogs! $3.95


Electric starter end bushing bearing
 
This is the little bushing in the belt case that supports the end of the starter clutch bendix in the 139qmb. If this bushing is worn, or missing, the starter clutch will bind and not allow the engine to be turned over. Got this problem? Get it fixed quick. $3.95

Exhaust stud set for GY6
 
This is a set of studs for GY6-50 and 150 as direct replacements for those agravating broken off or stripped one's. Get these fast, as we ship same day as payment. We don't want you down anymore than you do. $3.95

GY6 exhaust nuts
Exhaust cap nuts for retaining the exhaust system to the head. Sold as a pair. $3.99 

Intake manifold retaining studs
These are the long studs that screw into the head and retain the intake manifold on both 50 and 150 GY6. $3.95

GY6 oil screen, cap, seal and spring
 
Complete GY6 oil strainer replacement kit. Cheap and easy at just $8.95

NGK C7HSA SPARK PLUG
NGK is not only the premium name in spark plugs, it's the only name as far as we're concerned. Many problems with Chinese engines is the el cheapo plug that comes standard in them. Fix your problem, or prevent one, and get an NGK. This plug fits the 4 stroke 50,125,150 GY6 type engines.Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. GY6 139QMB. No one is lower at $2.95, plus 2 dollars shipping. At this price it's cheaper than your local shop!

CR7 Iridium Spark Plugs
Longer life, more stable spark energy are just some of the benefits of our Iridium spark plugs. Get them here cheaper than anywhere else as always. $9.95

139QMB 50cc belt cover
 
Complete belt cover that comes in both long and short case. If you have 8 bolts, it's short, if 10, it's long. The short case belt cover is 16.5 inches long. Your short will use a 669 belt, and long will use a 729 belt. Decent quality at a decent price. $39.95. (Note: these come in black painted color, and may have some light shipping scratches)
cover length

Extra long 139QMB belt cover
 Yes, there is a third 139qmb gy6-50cc belt cover...the extra long case. These are identified by having 12 retaining bolts, whereas short has 8, and long has 10. We've got 'em, dare ya to find 'em anywhere else!
Left Crankcase Cover Type-3 for 50cc 4-stroke QMB139 engines - Overall Length: 18.25 inches, 12 mounting holes. 
$34.95
GY6 service and repair manual
Here is a CD with tens of megabytes of useful service information for your GY6, 139QMB 139QMA, 157QMJ, CF250, LH170MN VOG Chinese scooter/atv buggy go-kartengine and chassis. This includes some wiring diagrams, the scooter book, some chassis technical info, SYM and Kymco books. Comes on a CD-R ready for you to view or print. $14.95

GY6 Engine mounting bushing kit
 
Does you scoot wobble around and just plain feel unsafe? It may very well be that your engine mount swingarm bushings are worn, letting the rear end swing about. Not safe. Very common, but for some reason no one else carries these very necessary parts. Kit includes both pivot bearing bushings, and the rear shock bushing. $19.95 

Standard replacement air box assembly
 
Cool, finally a place to find complete replacement air boxes for your 139qmb 50cc four stroke scooter/atv engine, and cheap too! $29.95!

Intake snorkel
Here is the intake front snorkel for stock airboxes on gy6-50cc scooters! These can cause running issues if not installed. Attaches to the front outside. Get yours here cheap! $4.95

Stock air filter element
Replacement foam air filter for standard 139qmb air box. $4.95 
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Handlebar throttle grip sleave
Replacement throttle sleave with grip for your Sunl, Roketa, VIP, Tank, Sym, TGB, TNG, Venot, Baja, Jonway, JMstar, Peace Motorsports, Schwinn, Keeway, Strada, Kymco, Aprilia, Italjet, Honda, Yamaha, Adly, Derbi, Tank, CPI, Geely, Baron, Bandit, Vento, Vespa, Piaggio, TGB, Boreem, Genuine, Sachs, Motofino, Mod Cycles, GSmotorworks, Dailem, United Motors, Schwinn, Hyosung, Zongshen, Mallaguti, Kinetic, Linhai, Roketa, SYM, PGO, Lifan
and so many others. These come in both two styles. Type 1 is the pic on top and is found most commonly on scooters and mopeds, type 2 is the bottom pic and is found mainly on ATV's. Your choice. Get while you can at only $5.95
Throttle sleave styles


REPLACEMENT BRAKE SHOES
Low on brakes? Get 'em replaced now. Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. GY6 139QMB. These shoes fit almost all drum brakes, especially the 50cc ones, front and back. Get it done cheap at $9.95

Engine cooling shroud
 
You won't find this anywhere else. Complete engine cooling shroud that fits around your cylinder and head. This is a critical component in your cooling system. If you don't have this installed, your engine will likely overheat and not last long. $14.95 

Cam chain guide set
 
Good quality cam chain guide set. $9.95 

Cam chain tensioner
 
Complete tensioner for GY6-50cc. Gasket is included with our complete gasket kit only.  $9.95

Quality cam chain
Replacement, better than original cam chains for GY6 engines. We have both 50 and 150 chains. Pick your size here. $9.95
chain size

Cylinder and head stud kit
 
Have you ever seen this anywhere else? This is a complete kit of studs and nuts for your GY6 50 and 150. These are the long studs that come from your crankcase up through your cylinder, head, and cam retainer, and cinch down the entire top end. These are better quality than original, and will sustain more torque than original. $12.95 
choose your engine

Cylinder dowel kits
 
How annoying is it to damage these little locator dowels that go between your cylinder and head and crankcase. Get this replacement set quick and cheap. $7.49 
choose your size

Standard replacement oil pump
 
Good quality replacement oil pump for your 139qmb chinese engine. Don't take a chance. If you ran out of oil, or locked up your engine, get this replaced to ensure proper oil delivery. $9.95

Transmission final output drive shaft
 
Brand new output short shaft for the single shock 50's. Use this as a standard replacement, or to convert our GY6-80 engines to the shorter shaft. This is the shaft that the rear wheel attached to.  $19.95 

Standard 139qmb replacement camshaft
 
Get that old, burnt out, or missing camshaft replaced with this direct drop in cam. We also have a performance cam available. $19.95 

GY6 ignition trigger pickup
 
Finally someone sells just the pickup trigger for the GY6-50 and 150 separately. It took some doing, but by popular demand and great effort, here they are. This is the unit that tells the CDI when to dump it's load into the coil, which fires the spark plug. $12.95 cheap!

Belt cover bolt set
Complete belt cover bolt set for 50cc in both short and long case. Short has 8 bolts, long has 10. Replace those ugly, rounded off originals with these shiny new ones. $4.95
pick your kit

Variator / Clutch / Flywheel nut
Stripped that nut off of your variator and/or clutch and/or flywheel. Get it right here cheap and fast. Available for GY6-50 and 150, along with the CF250. M10 flywheel nut, M12 variator/clutch nut GY6, M14 CF250 variator nut. $3.95 
choose your nut

cam chain tensioner cover    
Get that cam chain tensioner covered up. Cheap and fast as usual. $1.95 

Complete wiring harness GY6
GY6 wiring harness is a great way to fix that persistent electrical gremlin, or to have a wealth of electrical connectors and parts. How can you go wrong? $29.95
choose your engine type

Stock standard replacement exhaust
Title says it all. Standard replacement muffler exhaust pipe system for the GY6-50 type chinese scooters.  Chrome accents. Lists for much higher anywere else of course. $59.95

Standard fan cover
For proper cooling, you have to have this cover in place. Get it here cheap of course. $5.49 

139QMB complete powertrain swap package
Got a blown engine? Got troubles you can't figure out? Put so many miles on your scoot that it's just plain wore out everything? This is a complete powertrain assembly for your 139qmb. Has a running engine with carb, exhaust, rear wheels, brakes, shock, air box, the works! All that you see in this picture. Simply unbolt the suspension, wires, and lines, and give it a swap.  Typical ScrappyDog, these are prices the same as others who sell just the engine without all the accessories. We also don't rip you off on shipping. Priced to move. Limited quanities. Call for availability. $399.95

QMB139 Longcase GY6-50 engine assembly
Complete long case 50cc four stroke scooter engine comes with all internal electrical and CVT transmission components, unlike other places. Fits 12" and larger wheel version. $329.95 

QMB139 short case gy6-50 engine assembly
Complete 139qmb gy6-50cc engine assembly with all internal electrical and CVT transmission components installed and ready to go, unlike other kits. Fits 10" wheel version scooters in short case. $329.95 

gy6 centerstand
 While this is technically a chassis part, we've included it in the engine section because on a scooter, the engine is the rear swingarm, and the centerstand attaches to the underside of the engine, not the frame as in a conventional motorcycle. All steel construction and better than OEM, with a better price than OEM to boot! $19.95 
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