PROX forged replica piston kit built for reliable 4-stroke performance with low friction and long service life. CNC-machined from a low-expansion forged aluminum alloy for consistent fit and durability.
PROX Forged Piston Kit is designed to deliver dependable 4-stroke engine performance with a focus on low friction, stability and long-term reliability. Made from a specific forged aluminum alloy with low expansion, it helps maintain consistent clearances as temperatures rise—ideal for demanding riding and racing conditions.
Precision CNC machining ensures accurate dimensions and a high-quality finish, helping you restore crisp throttle response and maintain strong compression. If you’re rebuilding a top end or replacing a worn piston, this kit provides a trusted, OEM-style solution with the benefits of forged construction.
