99+ YZ250 YZ 250 Big Bore Kit 72mm Ported Cylinder Machined Head Powervalve Titanium Hotrods crankshaft with rod assembled

Hotrods crankshaft with rod assembled

and maximize engine longevity for aggressive dune riding

You will always be contacted for approval ahead of time

Aftermarket stock bore cylinder

99+ YZ250 YZ 250 Big Bore Kit 72mm Ported Cylinder Machined Head Powervalve Titanium Hotrods crankshaft with rod assembledFITS ALL 1999 AND NEWER YAMAHA YZ250 TWO STROKE MODELS READY TO BOLT ON AND GO! 72mm ported big bore cylinder Wiseco or Wossner 72mm forged piston** Piston rings Wristpin Circlips Wristpin bearing Cylinder Works cylinder head machined for 72mm big bore Big bore power valve assembly matched to cylinder Head stud kit Maxlock cylinder to crankcase stud kit NGK spark plug Stickers No mods required