What should the compression be on your rm125?

The compression for a Suzuki RM125 generally should be between 175 to 200 psi when the engine is in good condition. However, it's crucial to consult the manufacturer's specifications for your specific model year, as tolerances can vary. Regular maintenance, including checking the piston and rings, is essential to ensure optimal compression. Low compression may indicate wear and could require rebuilding the top end.