03-06 WR450F WR 450F Wiseco Piston 95mm Stock Bore Cylinder Top End Rebuild Kit XR350 and is the strongest metal

and is the strongest metal known to man besides Tungsten

Perfect direct bolt-on upgrade requiring no machining

Kawasaki KFX450R: 2008–2014

14:1 compression ratio for big power gains

03-06 WR450F WR 450F Wiseco Piston 95mm Stock Bore Cylinder Top End Rebuild Kit XR350 and is the strongest metal20001, 4785M09500, C3066, 71014 5, 5TA 11311 12 00, CR8EIX, 5TA 11311 00 00, 5TG 11633 10 00, 5TG 11603 00 00, 99999 03528 00, 99009 20500 00, 5TA 11181 00 00, 5TA 11351 00 00, 4FM 12213 00 00, 5TA 11311 01 00, 5TA 11311 02 00, 5TA 11311 10 00, 5TA 11311 11 00, 5TG 11631 00 00, 5TG 11633 00 00, 3KS 12213 00 00, 4BE 12213 00 00 Brand New Complete Yamaha YZ450F & WR450F Top End Rebuild Kit Wiseco Stock Bore Piston Kit Cometic Top End Gasket Fits Yamaha