PROX Piston Kit made in Japan for OEM-style performance and reliability in 300cc 2-stroke engines. High-silicon aluminum alloy and precise CNC machining ensure excellent fit and long service life.
Restore crisp power and dependable compression with the PROX Piston Kit—an OEM-replacement piston set manufactured in Japan for consistent quality and precise fit. Built from a high-silicon-content aluminum alloy and CNC-machined to extremely close tolerances, it helps bring your 300cc 2-stroke engine back to smooth running, strong throttle response and reliable starting.
If your engine is losing compression, smoking excessively, or you’re planning preventive maintenance before a hard season of riding, this complete kit makes a top-end refresh straightforward by including the essential components in one box.
