Description
If you’re running a KX65 at the limits of stock capability, you’ll hit a performance ceiling fast. The Wiseco 46.50mm oversize piston kit delivers measurable gains in horsepower and torque while maintaining the reliability needed for consistent racing performance. Built from premium high-silicon aluminum alloy and E-coated for durability, this kit is engineered to withstand the demands of both trail and competitive environments.
This is a complete forged piston assembly—no secondary sourcing required. The ultra-stiff strutted forgings optimize compression ratios for maximum power extraction, while the removal of boost ports smooths out the powerband for predictable throttle response and stronger top-end pull. Whether you’re prepping for a race season or upgrading a well-used engine, this kit extends service intervals and delivers the performance margin serious riders expect.
- 46.50mm oversize
- High-silicon aluminum alloy
- E-Coated finish
- Forged construction
- Includes pistons, rings, wrist pins, circlips
- Ultra-stiff strutted forgings
- Boost ports removed
- Optimized compression ratio
- KX65 2000-2009, 2011-2021
- MPN: 752M04650
