1. Cylinder diameter specification: standard bore diameter Φ53.5mm, suitable for four-stroke air-cooled/water-cooled single-cylinder engines, effective height of about 99.5mm, end height 71.5mm, compression ratio optimized to 9.5:1, supporting displacement increased to 110-125cc
2. Bore diameter: Φ53.5mm (standard version), outer diameter 72mm, suitable for Suzuki standard installation size