What is the compression of a 03 sx 125?

The compression ratio of a 2003 Suzuki RM125 (often referred to as SX125) is typically around 8.0:1. This ratio is designed to balance performance and reliability, offering adequate power for Motocross riding while ensuring the engine can handle various conditions. For specific tuning or modifications, it's always best to consult the manufacturer’s specifications or a professional mechanic.