Wiseco / Vertex Top End Rebuild Kit 1.00mm / .040" oversized 81.00mm bore piston kit and Vertex Top End Gasket Set. Includes piston, rings, pin, clips, top end bearing, and Top End Gasket Set.
ITEM FITS:
1990-1993 Polaris Trailboss 350
All Polaris 2-Stroke 350 ATV
(1) 639M08100
(1) B1002
(1) 810922