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250cc Performance

This engine is for the Honda Helix CN250, CH250, Tank Touring 250, NST, and Jonway, JMstar, and CFmoto Fashion, V3 V5. Qlink Sapero 250cc motorcycle scooter engines.
Tank Touring 250DE, Lance Duke 250, Roketa Bali 250, SUNL SL250-2, Jonway Master 250
These parts are also interchangable with the CF Moto V3 & V5 automatic motorcycle.

CF250 stainless performance exhaust system
Wow! unbelieveable. A performance stainless exhaust system for the CF250 and CH250 Honda Helix finally available! Quality construction is a bolt on affair. Gives you the performance and attitude you've been wanting for a long time. Comes complete with canister muffler, headpipe, and all mounting hardware. Great stuff at a fair price. Back in stock for a limited time! $299.95 

VOG performance exhaust system
Stainless performance exhaust system finally available for your 250, 260, 275, and 300cc VOG style scoot engines. Comes complete with all hardware. Be sure and get a performance boost, and a good sound!  $324.95

Click here for more VOG 250, 260, 275, and 300cc VOG style performance and standard parts

Hoca CN250 75mm Big Bore cylinder kit

Hoca CN/CF250 75mm Big Bore Cylinder Kit for 250cc 4-stroke water-cooled V3/V5 172mm engines found on street-legal scooters, ATVs, Dune Buggies and much more. Upgrades to 265cc! Includes cylinder, piston, piston pin, rings, circlips, head gasket and base gasket.
*Please note: Some crankcase modification may be required.
Cylinder Bore: 75mm
Cylinder overall height: 103mm

Bolt Box Fully Programmable Digital ignition advance CDI

Plainly said, you are not getting the most power out of your engine unless you have full control of your ignition timing advance. There is no other product on the market like this. The Bolt Box allows you to configure your timing in one degree increments up to 60 degrees advance in 1k rpm segments in real time and without a computer with the intuitive menu buttons on the face. This also allows you to set you rev limit to any speed and is capable of 19,900 rpm's. You can also switch between two ignition maps with the flick of a switch mounted on your handlebar. While running, this unit also functions as a digital tachometer! The Bolt Box is fully compatible with the AC ignition stators found on most scooters today. With the addition of our Inverter, you can go fully DC and eliminate the stator completely! Nonvolatile EEPROM configuration memory keeps your settings internally for life even without power. Made in Europe with an American brand microprocessor and ultra fast capacitor, this is not for the amateur, but for those that are or are going to be doing all the big modifications and want to ensure they are getting the full potential and bang for the buck from their engine, and this does it. This requires some simple wiring and an elementary understanding of electrics, but includes full instructions and schematics. Works with ALL scooter brands from any country and also works with any single cylinder motorcycle, 2T or 4T. At $179.95 the Bolt Box can't be beat. Limited quantities in stock, so get them while you can!
CF/CN 250 performance variator kit

Dr. Pulley Performance Variator Assembly for 250cc 4-stroke water-cooled CN/CF 250 172mm engines.
Specially Designed Ramp Shape

  • Extended Ramp Length
  • Adjustable Boss Length
  • Racing Type Ramp Plate
  • Includes Instructions
  • Includes Sliders
  • Does Not Included Roller Weights
  • Number of Splines: 21
  • Drive Face Outer Diameter (A): 128mm
  • Boss Inner Diameter (C): 17mm
  • Boss Outer Diameter (B): 27mm
  • Ramp Plate Inner Diameter (D): 17mm 
  • Fan Inner Diameter Peak to Peak   (H): 15mm
  • Fan Inner Diameter Valley to Valley (G): 16.5mm
  • $169.99
868 Bando performance belt
Genuine Japanese made Bando performance belt is actually branded with the Honda logo. Size is an 868-22.5-30 for the CN250. Get 'em here less less $$$39.95 

CF/CN 250 24x18 sliders
 Dr. Pulley 24x18 Sliding Roller Weights for the Honda CN250, CN 4T 250, Helix 250, Elite 250, Suzuki Burgman 250 and many more. 
Traditionally, gear ratio is changed by the up-and-down rolling movement of the roller weights in the ramp of the Moveable Drive Pulley (MDF).  
Now the innovative Dr. Pulley Sliding Roller Weights slide
 up-and-down the ramp to change the gear ratio. This unique sliding movement (not rolling) provides exclusive advantages to increase CVT performance. With Dr. Pulley, no abnormal wear will occur even when running in high gear.
choose your weight
Performance Roller Weight 23x18
Cool, finally a source for those hard to find variator rollers on your CF250 and CN250! These are quality copper core base with long lasting self-lubricating nylon outers.  Standard size is usually about a 26g. $19.95 
choose your weight

Variator glide keys

Dr. Pulley Variator Slides for the Honda 250cc 4-stroke water-cooled CN250 172mm engines.
The Slide Pieces in the variator are equally as important as the rollers. It is highly recommended to change the slide pieces to coincide with the rollers. The Dr. Pulley Variator Slides are made of the same abrasion-resistant nylon as the Dr. Pulley Roller Weights, which promises a long life.

Water cooled 250 Performance Ignition module
High performance racing DC igntion CDI module for the water cooled 250cc and 150cc like the CF250 CF moto, Tank touring, Jonway, Roketa, NST, Kymco Bet and WIn, etc. Super good quality scooter, ATV, and buggy ignition module is durable and high performing. Lifts the rev limiter and advances the igntion timing. $49.95. 

CH150 & CH250 Helix performance CDI
Performance unrestricted and advance timing curve racing CDI for your AC fired CH150 and CH250 scoot and ATV. Provides the electronic performance upgrade you need. Be sure and compare the plug in the pic to your specific model Helix.  $49.95 

Honda Helix AC fired performance CDI
This is the rounded plug AC performance CDI for the later model Honda Helix. We also stock the older square plug above. No rev limit, advanced timing curve, and larger capacitor give you the energy you need for brisker acceleration, easier starts, and overall much better performance. $49.95  

Red hot high energy GY6 ignition coil
This GY6 performance ignition coil is similar to our orange coil, but hotter and more powerful! These fit all the fourstroke scooter/atv engines like the 139qmb, 152qmi, 157qmj, 172mm, 50cc, 125cc, 150cc, 250cc. Simple one bolt installation. Tank, Jonway, Honda Helix, NST, JMstar, etc. Now actually in stock and made in Taiwan!!! $29.95
High energy ignition coil boosts that weak spark into a real shocker. This will improve starting, acceleration, and fuel mileage. This is plug and play for GY6 scooter atv 50, 125, 150 engines in 152QMI, 152QMJ, 157QMI, 157QMJ, 139QMB, 172MM, CF250, and all other 4strokes. As on all performance parts, no guarantee, as these parts will not fix a problem you may have elsewhere. Fits all Chinese 4stroke engines as well as your budget. $19.95

Performance OKO 30 & 32mm CVK carburetors
Super good quality OKO carburetor with the performance flat slide throttle, pumper, reliable electric choke, large float bowl, Keihin components, #40 pilot and and comes with extra #38 and #42 jets. This carb is a must for anyone wanting to get more speed and acceleration out to their moto. The flat slide reduces veturi eddying, which results in not only better air flow, but more consistent fuel/air mixture ration. Ever seem like your bike ran weird on some days, and not others? It wasn't you, it was your cheap round slide carb. Step up to the plate and stop fooling around. Go fast, and going fast at only $139.95 
Comes in two different sizes.
choose your size
High angle performance race camshaft
This is a performance racing cam for your 250cc scooter/buggy/atv engine. It is an A9 sport spec for increaed upper mid-range and top end horsepower. Just what you need at an equally agreeable price. ***out of stock*** $74.95

250cc High flow air filter
High performance air filter for your 250cc scooter like the Tank touring, Roketa, NST, Jonway, CFmoto V3 V5, and others. 48mm for the 32mm carburetor. Same great price. $9.95

Performance Pre-filter
Want to preserve your new performance air filter and engine? This slip on pre-filter fits over our sock filters and prevents the larger particles and other debris from ever getting to your main filter, allowing it to last longer and filter more efficiently. Super cheap! $2.95 (may come in black or orange)

Chrome Performance Air Filters
 Universal fit reusable filter with chrome end caps.
Sold each - order one filter per carburetor.
It is recommended to measure your carburetor air filter mounting flange prior to installation.
By popular demand, we are offering these K&N style pod filters in addition to our Uni foam pod filters sold above. $11.95
choose your size option
Positive Crankcase Ventilator
Have, or are you removing your airbox?Is your scoot blowing oil? Have you run dry and don't know why? The reason may be that excessive pressure is being built up in your crankcase, which blows seals and/or pumps all your oil out the vent. This nifty device actually creates a vacuum within your engine by only allowing air out, and not back in. Made in the USA all steel construcion easily attaches to your vent line, which should be place above your engine as far as possible, and installed on the barbed nipple end. Threaded end is left open, or attached to a filter if you wish. This is a must if your running your scoot full throttle alot. New improved model. Cheapest performance fix anywhere at only $9.95
CF250 adjustable performance CDI
Fully adjustable advance timing CDI is for DC fired, CF250 based engines. Whopping performance potential on this top notch unit. $69.95 

Crankcase vent/oil catch can
Crankcase vent and oil catch can solves all your venting problems. Oftentimes, scooters and ATV's are run full throttle for extended periods under heavy load. This causes alot of pressure to be built up in the crankcase, which results in a heavy oil vapor escaping out the vent, or anywhere else it can find, like through your seals. This can blow enough oil out that you could run out of oil before you think to check the level. Adds another vent outlet by replacing your oil dipstick. Attaches to your existing line also. We highly recommend adding the PCV to the outlet of this unit also. One line attaches to the existing vent, the other to the new dipstick, the other to atmosphere via PCV valve. Easy installation with all hardware included. Works with any engine. Color may vary. $29.95
***replaced by the JET oil catch can***
CVK choke
Replacement choke electric enrichener circuit for the larger CVK type carbs. Fits genuine Keihin also. Rare find, for a rare price. $24.95

VOG performance clutch pack

Dr. Pulley HiT Clutch 201205 with 45 degree pillow springs for Linhai 260/300cc engines, Aprilia Leonardo 300, Eton Vector 250, SYM RV250, Yamaha Majesty 250, Yamaha Versity 300, Yamaha XCity 250, Yamaha XMax 250 and many more. 
The Dr. Pulley HiT Clutch has 2 sets of springs at work: the clutch spring inside controls the movement of the clutch pads towards the clutch bell through centrifugal power.
The second set of torque springs (pillow springs), externally mounted, controls the pressure by using a push pin on the clutch linings against the clutch bell. This prevents most of the slipping phase of the clutch, thus creating less friction and allowing less heat to be created. Heat is lost power! Thus your scooter will accelerate much faster due to the power transfer occurring at a lower RPM.
The clutch can be customized to all personal needs. For example, if you want to get more power at start, choose a stronger clutch spring to increase the starting RPM. If you want to shorten the slipping phase of the clutch, you should use a weaker torque (pillow) spring. For an extreme start, choose a strong clutch spring and a very weak (or no) pillow spring.

VOG roller sliders
 Dr. Pulley 20x12 Sliding Roller Weights for the Linhai 260/300, Yamaha Morphous 250, Yamaha Vino 125, Yamaha Zuma 125  and many more. Please select weight from drop-down menu. 
Traditionally, gear ratio is changed by the up-and-down rolling movement of the roller weights in the ramp of the Moveable Drive Pulley (MDF).  
Now the innovative Dr. Pulley Sliding Roller Weights slide up-and-down the ramp to change the gear ratio. This unique sliding movement (not rolling) provides exclusive advantages to increase CVT performance. With Dr. Pulley, no abnormal wear will occur even when running in high gear. 
Dr. Pulley's U.S. Patent Number 7,276,004 states that their sliding roller weights eliminate abnormal wear, prevent reduction gear ratio deterioration, prolong the useful life of the transmission, and have the availability to adjust reduction gear ratios as well as driving performance. At the same time, Dr. Pulley Sliding Roller Weights are also adapted to compensate wear automatically, to adjust by itself to move further outward in a movable drive pulley half and to make the vehicle reach a higher maximum vehicle speed.
choose your weight


fuel pump
Vacuum operated fuel pump is found on scoots and atv's that have the fuel tank at, or below the carburetor level, like the Flagship CF250, VOG,  and Honda Ruckus. Pretty much universal and only requires a vacuum line. These are great for custom builds also. $34.95 
High Flow/High Capacity fuel filter
 This is the biggest and baddest fuel filter you can get for your hot rod scooter or motorcycle or atv/buggy. Don't compromise on this. 8 square inches of polymerized paper filter area suitable for gasoline or gasahol. Gravity flow rate of 7.6 gallons per hour! These are super good quality and will likely be your last filter. Look at this pic that shows the performance filter next to a standard filter. (one filter per purchase...don't get confused)
10 piece gy6 carb tuning kit
 Just for mechanics and tuners alike. Buy the entire kit and save half off on the jets!
GY6 and CN250 CVK Main Jet Kit for 150cc and 125cc GY6 carburetors and 250cc 4-stroke water-cooled 172mm carburetors, includes a size range from #100 - #140. Available in 10 piece or 50 piece set.

VOG 74mm Big Bore kit
 74mm taiwanese quality big bore kit fits all VOG Linhai Yamaha Majesty water cooled horizontal engines making them a full 295cc with superior longevity. Includes everything as seen in the picture for bolt on installation.
Try and find this anywhere else for any price. We dare you...
VOG Aeolius engine assembly
173MN VOG 300 engine assembly for your Aeolius scooter and ATV applications. Comes complete with all CVT and internal electrical components unlike other places. Good quality and performance for sure. $949.95

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