YFZ450 YFZ 450 98mm Big Bore Kit +3 Cylinder 480cc Top End Rebuild Assembly Kit Nachi 573M06800 Piston Kit (2) -

573M06800 Piston Kit (2) - MADE IN USA

This kit installs directly onto your stock DRZ400 cases

Also Fits:

FITS ALL POLARIS SPORTSMAN 570 MODELS AND YEARS

YFZ450 YFZ 450 98mm Big Bore Kit +3 Cylinder 480cc Top End Rebuild Assembly Kit Nachi 573M06800 Piston Kit (2) -FITS ALL YAMAHA YFZ450 CARB MODELS ONLY BPR 98mm big bore cylinder Wiseco CP or JE forged big bore piston Nitrite coated piston rings Chrome wristpin Circlips Top end gasket kit Cometic big bore MLS head gasket Timing chain Maxlock TITANIUM head stud kit LIFETIME WARRANTY*! Piston uses pump or race gas No mods required 1 year warranty* We are an authorized distributor We are BPRATV. Feel free to visit us on the web, give us a call, come in to our