Description
When you’re pushing a RM 125 to its limits, a worn or stock piston becomes your bottleneck—losing power, wasting fuel, and risking catastrophic engine failure. The Wiseco 519M05500 delivers the precision and durability competitive riders demand, with forged aerospace-grade aluminum and CNC machining that translates directly to measurable gains in acceleration and reliability. This is a complete kit, so you get everything needed for a straightforward installation without hunting down additional components.
- Bore diameter: 55.00 mm
- Oversize: 54 mm
- Material: Forged aluminum alloy
- Machining: CNC-precision
- Ring type: Gas nitrided steel
- Includes: Piston, wrist pin, rings, circlips
- Fitment: Suzuki RM 125 (1985–1986)
- Installation: Bolt-on replacement
- Heat management: Advanced cooling design
- RPM rating: High-performance capable









