Yamaha YFZ450 YFZ 450 Stock Bore Cylinder Piston Wiseco Crank Motor Rebuild Kit RZR XP-4 900 This is a direct bolt-in

This is a direct bolt-in replacement kit

A: This kit is compatible with ALL Yamaha 660cc ATVs and Side x Side models and years

Double the reed tip surface over a conventional reed valve design

and chamber

real rider tech advice

Yamaha YFZ450 YFZ 450 Stock Bore Cylinder Piston Wiseco Crank Motor Rebuild Kit RZR XP-4 900 This is a direct bolt-inYamaha YFZ450 Engine Rebuild Kit Wiseco Crank Piston Stock Bore 2004 2013 Yamaha YFZ450 Stock Bore Engine Rebuild Kit Wiseco Crank, Piston & Cylinder Complete Bottom End & Top End Rebuild Solution Restore factory power and long term reliability with the BPRATV Wiseco Cometic Yamaha YFZ450 Engine Rebuild Kit, featuring premium components from Wiseco, Cometic, NTN, Koyo, and BPRATV. This kit is engineered for riders who demand OEM level fitment with