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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


 
Our Price: $161.99

Stock Status:In Stock
Part #: STAGE2KIT270

Header & Exhaust Options

No Exhaust

Add Header, Kart & Mini-Bike [+$35] .......WARNING: Pipe should be supported with a bracket/brace to either the frame or the engine otherwise pipe may fracture or break.

Add Header, Muffler, and Clamp: Kart & Mini-Bikes [+$77] .......WARNING: Pipe should be supported with a bracket/brace to either the frame or the engine otherwise pipe may fracture or break.

Add Mud Motor Header & Muffler (390) [+$40]

Additional Options

Add Billet Connecting Rod [+$146]

Add UT2 Coil w/o Rev Limiter, for UT2 Hondas Only [+$63]

Add Genuine Honda UT1 Coil [+$32]

Qty:
Description -
 


Step up from the Stage 1, this kit is designed to further improve the power for the GX240s and GX270s by adding a larger carb and cam.


Includes:


  • Race/Open Air Filter & Adapter
  • GX390 Carb
  • GX390 Insulator & Studs
  • HD Valve Springs
  • Offset Timing Key
  • 260 Lift High Performance Cam
  • Carb and Side Cover Gaskets
  • Optional Header/Exhaust


Picture for reference only and may show optional parts. See above description for actual content. Header not included unless specified.


Note: Use of the Choke Bracket requires use of a stock Honda (or Chinese OHV) "Air Filter to Carb Gasket". This is not included in the kit. You can use the one that came with the motor, or can purchase one at


http://www.nrracing.com/product-p/16220-za0-702.htm

Picture for reference only and may show optional parts. See above description for actual content. Header not included unless specified.


Filter should be sprayed with K&N type oil, especially in dirt applications. Oil not included click here


Billet Aluminum flywheel recommended. Stock flywheels, esp "Clone" are prone to failure and very DANGEROUS

Note: UT2s series Hondas (2012 & up) or later have a built in Rev Limiter in the coil and will require a new coil to exceed 4000 rpm. 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.

If ordering for a 301, be aware 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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