10-17 YZ450F YZ 450F Big Bore 99mm Cylinder Complete Rebuild Hotcams Valves Kit

10-17 YZ450F YZ 450F Big Bore 99mm Cylinder Complete Rebuild Hotcams Valves Kit

Regular price $2,777.00 Sale price$2,775.00
Shipping calculated at checkout.


  • NEW 99mm cylinder
  • CP forged big bore piston
  • Hi temp piston rings
  • Wrist pin
  • Circlips 
  • Stage 2 Hotcams intake and exhaust
  • Kibblewhite lightweight valve spring kit 
  • Titanium retainers
  • Heat treated collars
  • Kibblewhite stainless steel intake and exhaust valves
  • Valve stem seals
  • Hotrods crankshaft assembly with rod
  • Crank bearings
  • Transmission bearings
  • Shit cam bearings
  • Water pump bearing
  • OEM oil pump assembly
  • Timing chain
  • Stud kit
  • Clutch kit
  • Complete gasket kit
  • Complete seal kit
  • Stickers 
This is a bolt on kit that requires no machining of any kind.  Runs on race gas.  All parts are new in the original packaging, and the original manufacturers' warranties apply*.

We ship next day most of the time. Modquad parts are shipped Monday-Thursday. Engine Kits are 3-5 business days.

We don't do backorder! If your items has already sold you will be notified immediately and you money refunded on the spot.

Sold items are removed daily.

If you see it on this website, it is 100% in stock unless it just sold before you clicked buy.

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