Speed Kit for Kart Engines, GX240, GX270, & 301 Stage 2
As a step up from the Stage 1, this kit is designed to further improve the power of GX240s and GX270s by adding a larger carb and cam.
Includes:
-
Race/Open Air Filter & Adapter
- GX390 Carb
-
Heavy Duty Valve Springs
-
Offset Timing Key
- 102 Main Jet
- 260 Lift High-Performance Cam
- Carb and Side Cover Gaskets
- Optional Ignition Coil
- Optional Billet Connecting Rod
- Optional Header/Exhaust
*Note: Use of the choke bracket requires use of a stock Honda (or Chines OHV) "Air Filter-to-Carb" gasket. This is not included in the kit. You can use the one that came with the motor.
UT2 series Hondas (2012 & up) or later have a built-in rev limiter in the coil and will require a new coil to exceed 4000rpm. The UT2 coils (4 wire) can only be used with stock flywheels. If using a billet flywheel, you must run a UT1 style coil (single wire). Chinese engines usually have UT1 style coils already. However, some Lifans and 420s have a digital ignition and will need a Honda UT1 coil to run the billet flywheel.
Filter should be sprayed with a K&N type oil, especially for dirt applications. Oil not included.
Picture is for reference only and may show optional parts. See above description for actual content. Header not included unless specified.
Warning: Billet aluminum flywheel recommended. Stock flywheels, especially "clones", are prone to failure and are very dangerous!
If ordering a 301, be aware that some engines have large cam journals (.6357); most 301s have standard cam journals (same as GX270s). If you have a 301, we recommend you measure your cam journals before ordering this.
UT2 series Hondas (2012 & up) or later have a built-in rev limiter in the coil and will require a new coil to exceed 4000rpm. The UT2 coils (4 wire) can only be used with stock flywheels. If using a billet flywheel, you must run a UT1 style coil (single wire). Chinese engines usually have UT1 style coils already. However, some Lifans and 420s have a digital ignition and will need a Honda UT1 coil to run the billet flywheel.
Filter should be sprayed with a K&N type oil, especially for dirt applications. Oil not included.
Picture is for reference only and may show optional parts. See above description for actual content. Header not included unless specified.
Warning: Billet aluminum flywheel recommended. Stock flywheels, especially "clones", are prone to failure and are very dangerous!
If ordering a 301, be aware that some engines have large cam journals (.6357); most 301s have standard cam journals (same as GX270s). If you have a 301, we recommend you measure your cam journals before ordering this.
This kit will not fit engines with large journals!
