Big Bore Kit

TRX400EX TRX 400EX Big Bore 89m 440 12.51 Hi Comp Race Gas Top End Rebuild Kit


TRX400EX TRX 400EX Big Bore 89m 440 12.51 Hi Comp Race Gas Top End Rebuild Kit
TRX400EX TRX 400EX Big Bore 89m 440 12.51 Hi Comp Race Gas Top End Rebuild Kit

TRX400EX TRX 400EX Big Bore 89m 440 12.51 Hi Comp Race Gas Top End Rebuild Kit   TRX400EX TRX 400EX Big Bore 89m 440 12.51 Hi Comp Race Gas Top End Rebuild Kit

FITS ALL HONDA 400EX 400X AND XR400R MODELS AND YEARS. 12.5:1 Wiseco or JE forged piston - race gas only.

Top end gasket kit - head base exhaust chain tensioner cylinder. This is a bolt on kit that requires no machining of any kind. All parts are new in the original packaging, and the original manufacturers' warranties apply.

Please check your order thoroughly when receiving it. THIS KIT IS NOT DIY. We recommend that this kit be installed by a qualified mechanic with experience working on these types of motors. Piston comes with specific instructions for setting the ring gap. If you do not follow these exactly your motor will fail.

The item "TRX400EX TRX 400EX Big Bore 89m 440 12.51 Hi Comp Race Gas Top End Rebuild Kit" is in sale since Thursday, July 1, 2021. This item is in the category "eBay Motors\Parts & Accessories\ATV, Side-by-Side & UTV Parts & Accessories\Engines & Components". The seller is "bpracingatv" and is located in Upland, California. This item can be shipped worldwide.

  1. Modified Item: Yes
  2. Country/Region of Manufacture: United States
  3. Custom Bundle: Yes
  4. Surface Finish: Forged
  5. Manufacturer Part Number: 4794M08900 C7826 12100-KCY-670
  6. Modification Description: 440cc
  7. Placement on Vehicle: Upper
  8. Brand: Wiseco Cometic BP Racing ATV Honda
  9. Warranty: Yes
  10. Bundle Description: big bore


TRX400EX TRX 400EX Big Bore 89m 440 12.51 Hi Comp Race Gas Top End Rebuild Kit   TRX400EX TRX 400EX Big Bore 89m 440 12.51 Hi Comp Race Gas Top End Rebuild Kit