Description
If you’re pushing your Trail Boss 350L beyond stock limits, you need a piston that won’t fail under increased boost and compression. The Wiseco +1.50 mm kit delivers forged strength and precision engineering that handles aggressive tuning while maintaining reliability across extended service intervals. This is the upgrade serious racers and tuners choose when durability and performance gains matter.
Built from high-silicon aluminum alloy and E-coated for wear resistance, this complete kit gives you everything needed for a professional-grade rebuild without compromise.
- Forged aluminum construction
- +1.50 mm oversize
- High-silicon alloy material
- E-coated crown grooves
- Increased compression ratio
- Enhanced ring sealing
- Includes piston, rings, wrist pins, circlips
- Fits 1990-1993 Polaris Trail Boss 350L
- MPN: 639M08150
- Bolt-on installation (honing required)
- Expert racer recommended
