New Wiseco PK1651 Engine Rebuild Kit for Polaris Trailboss 350 & Big Boss 350

Fits 1990 to 1993 models

Kit includes a 639M08200, .080 over (82.00 mm) Wiseco Piston with Rings, Wrist Pin, Circlips, Top End Gasket Set and Wrist Pin Bearing




Get all the parts you need in one kit. You get a Wiseco Piston, Top End Gasket Set and Wrist Pin Bearing.

Wiseco Pistons are known for durability, longevity, and increased horsepower. Innovative forging design and piston skirt provides maximum horsepower and torque.

What are the advantages to using Wiseco Pistons?

  • All Wiseco Pistons are Forged from high silicon, low expansion aluminum alloy which offers superior strength, reduced weight, inproved heat transfer and longer life.
  • Forged reinforced dome features waffle design for improved heat transfer and additional strength.
  • CNC computerized high-speed Diamond Turning Centers hold exact tolerances with no size variations.
  • Closer wrist pin boss spacing eliminates wrist pin flex






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