Wiseco / Vertex Top End Rebuild Kit .50mm / .020" oversized 80.50mm 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) 639M08050
(1) B1002
(1) 810922