Wiseco Piston Kit 81.50mm 10.25:1 Compression Honda ATC350X 1985-1986 PK1016

A worn or damaged top-end directly kills engine performance and reliability—especially on high-revving ATV engines where piston integrity is non-negotiable. This Wiseco forged piston kit gives you a complete, matched assembly engineered specifically for your ATC350X, eliminating guesswork and ensuring proper clearances, ring seating, and thermal stability. If you're rebuilding for reliability or chasing peak power, a quality piston kit is the foundation that makes everything else work.

Wiseco's high-silicone forged aluminum construction handles sustained high-temperature operation while keeping thermal expansion in check—critical for maintaining ring seal and preventing scuffing. The kit arrives complete with rings, wrist pins, and circlips, so you're not hunting down individual components. Installation is straightforward for anyone comfortable with basic engine work, and the precision fit ensures immediate, hassle-free operation once installed.

• Bore diameter: 81.50mm
• Compression ratio: 10.25:1
• Material: High-silicone forged aluminum
• Fitment: Honda ATC350X 1985–1986
• MPN: PK1016
• Includes: Piston, rings, wrist pin, circlips
• Gasket kit: Included
• Installation: Bolt-on top-end rebuild
• Thermal expansion: Minimal
• Application: ATV top-end rebuild