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Stud Kit, Side Cover (with solid Dowels) - GX200, 6.5 Chinese OHV, & 212 Predator Engine Kit, GX390 Stroker, 420 cc (+.200), Cast Crank
Our Price: $19.99
Our Price: $309.99
Stud Kit, Side Cover (with solid Dowels) - GX200, 6.5 Chinese OHV, & 212 Predator Engine Kit, GX390 Stroker, 420 cc (+.200), Cast Crank
Side Cover Stud Kit.
Includes 10.9 Grade Side Cover Studs, HD extra Thick Washers, Grade 10.9 Nuts, & Solid case Dowel Pins.
Mandatory for all HP applications. AKRA Legal
(Note. Head studs not included)
420cc Engine kit. for GX390s

Choice of
  • Aftermarket Cast Crank with .200 More Stroke, producing 420cc
  • ARC Billet Rod
  • OEM Honda Piston machined to fit kit
  • OEM Honda Rings
  • Wristpin & Clips

Puts piston at TDC, Note: This is not a bolt in kit, but for experienced engine builders.

Available unbalanced or Fully Balanced.

Also available for GX340, please email.
Stud Kit, Head, GX200, 6.5 Chinese OHV, & 212 Predator Hop Up Kit - GX240 - GX270 and 8/9hp Chinese OHV, Stage 2
Our Price: $17.99
Our Price: $157.99
Stud Kit, Head, GX200, 6.5 Chinese OHV, & 212 Predator Hop Up Kit - GX240 - GX270 and 8/9hp Chinese OHV, Stage 2
Stud Kit, Includes Head Studs, Washers & Nuts


Fits GX160, GX200, Predators, and most Chinese OHV 6.5 Engines


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. (if in doubt, order the small journal).

Engine Kit, GX390 Stroker, 414 cc (+.160), Honda Crank Exhaust Kit, Mokai - GX200, GX160, 6.5 Chinese OHV, & 212 Predator
Our Price: $499.99
Our Price: $76.99
Engine Kit, GX390 Stroker, 414 cc (+.160), Honda Crank Exhaust Kit, Mokai - GX200, GX160, 6.5 Chinese OHV, & 212 Predator
414cc Engine kit. for GX390s


  • Genuine Honda Crank welded and ground for +.160 more Stroke, producing 414cc
  • ARC Billet Rod
  • OEM Honda Piston machined to fit kit
  • OEM Honda Rings
  • Wristpin & Clips

Puts piston at TDC, Note: This is not a bolt in kit, but for experienced engine builders.

Available unbalanced or Fully Balanced.

Also available for GX340, please email.
Specially designed exhaust for 6.5 Mokai's. Removal of Muffler Baffle is recommended.