Wiseco PK1650 Polaris 350 90-93 Trailboss 639M08150

Polaris 350 '90-93 Trailboss (639M08150) Wiseco's legacy is rooted in 2-stroke piston manufacturing and performance, dating over 80 years ago back to 1941. Today, Wiseco 2-stroke pistons are the result of decades of experience, incorporating the latest in 2-stroke piston manufacturing and design to deliver the performance Wiseco built its name on. Engineered, forged, and machined in the USA in Mentor, OH Designed and built for each specific 2-stroke powersports engine Improved tensile strength of forged material optimizes strength and service life Dedicated forgings and additional lightening operations allow for optimized strength-to-weight ratio Includes high-quality piston ring(s), wrist pin(s), and circlips