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MCB Stage-2 Engine Rebuild Kit Honda CRF 450R 2017-2020

Premium Engine Rebuild Rotating Kit, Crankshaft, Piston, and Gaskets

MCB Exclusive STAGE-2 rebuild Kit for Honda CRF 450R 2017-2020
- Premium German engineered Wossner crankshaft.
- Forged and Shot Peened connecting rod.
- Slightly lighter weight than OEM with improved strengthened connecting rod and overall durability.
- Bushed wrist pin end with additional oil grooves.
- Premium lower end connecting rod roller bearing.
- All OEM Honda main crank bearings
- Premium German Forged Wossner piston 13.5:1 or 14.0:1 CR optional
- Full engine gasket set.
- The crankshaft & piston included in this kit are of better quality than the OEM Honda parts and is exactly what we would use if we were building our own CRF450!

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Pricing: $899.95


Kit inlcudes
- Premium forged, shot peened Wossner crankshaft assembly
- OEM Honda main crank bearings
- Premium forged Wossner piston (13.5:1 or 14.0:1 compression ratio).
- Premium full engine gasket set.
- Optional OEM Honda MKE-A00 remanufactured cylinder (requires a core)

MCB uses Wössner pistons exclusively in all our MX/Off road kits. Germany's finest aftermarket forged piston manufacturer with over 25 years of experience in the Powersports / racing industry.

Wössner is currently the piston of choice for Monster Energy Star Yamaha Racing Team.

This race series Wossner crankshaft assembly is used by many U.S. American Flat Track series racers and MXGP motocross teams!!


  • 23431006
  • 23431006
  • Honda
  • New

Shipping Information

  • Item Requires Shipping
  • 15.0 lbs.
  • W10.0000” x H12.0000” x L18.0000”

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