Wiseco Piston +1.00 mm Suzuki RM 125 1989-1999 641M05500

If you're running a Suzuki RM125 and want to unlock real gains in power and throttle response, a properly sized piston is where it starts. Wiseco's +1.00mm oversized piston delivers the durability and precision you need to push your engine hard without compromise, whether you're chasing lap times or tackling technical terrain.

This piston is manufactured from high-silicon aluminum with CNC-precision tolerances, meaning it'll handle sustained high-RPM loads while maintaining the tight clearances your engine demands. The optimized combustion chamber design improves air flow and burn efficiency—translated into noticeable gains in both power delivery and engine responsiveness.

• Fits: Suzuki RM125 (1989–1999)
• Oversized: +1.00mm bore
• Material: High-silicon aluminum
• Machining: CNC-precision tolerances
• MPN: 641M05500
• Installation: Professional boring required
• Benefit: Increased horsepower output
• Benefit: Extended engine durability