FMF Factory 4.1 Mini - KLX140 (Slip-On) Oils Replacement Piston Kit for the

Replacement Piston Kit for the 63mm piston in the 170cc Big Bore Kit

body panels

with 2 rear and 1 front spacer included

2004-2013 Honda CRF80F

1985-2013 CRF/XR80

FMF Factory 4.1 Mini - KLX140 (Slip-On) Oils Replacement Piston Kit for theFactory 4. 1 muffler available in natural aluminum or blue anodized titanium with titanium end caps The lightest mufflers available Superior power and performance horsepower improved throughout the rpm range Feature exclusive proprietary Chamber Core technology Factory Forward Engineering centralizes mass, improves handling Made from premium quality American materials Customize with performance tuning inserts and spark arrestor module Meet AMA sound