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Hop Up Kit; GX240, GX270, 9/11hp OHV, & 301; Stage 2
Hop Up Kit; GX240, GX270, 9/11hp OHV, & 301; Stage 2

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Our Price: $157.00

Stock Status:In Stock

Part #: STAGE2KIT270

Ignition Coil Option

Add UT2 Coil without Rev Limiter, for UT2 Hondas Only [+$66]
Add Genuine Honda UT1 Coil [+$36]
None Included
Additional Options

Add Billet Connecting Rod [+$161]
Header & Exhaust Options

No Exhaust
Add Header- Kart & Mini Bike [+$41]
Add Mud Motor Header & Muffler (GX390) [+$46]

Description -
Stage 2 Hop Up Kit for GX240, GX270, 9/11hp OHV, and 301 Engines
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.
  • 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, or you can purchase one from us here.

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 - click here.

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!

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