The culmination of more than 50 years of Yamaha two-stroke innovation, the latest YZ125 is a bike built to take you to the VictorYZone. Featuring lightweight race-bred engine internals and the renowned torque-boosting Yamaha Power Valve System (YPVS), the YZ125 develops hard-hitting power that keeps you out front. Along with its advanced aluminium frame, class-leading KYB® suspension and ultra slim bodywork providing a high degree of controllability both on the ground and in the air, it's designed for competition straight out of the box. Technical Specification Engine Type: Liquid-cooled, 2-stroke, reed-valve Displacement (cc): 125.0 Bore x Stroke (mm): 54.0 x 54.5 Compression Ratio: 8.2 - 10.1 : 1 Lubrication System: Premix Fuel Management: PWK38S Ignition: CDI Starter System: Kick Fuel Tank Capacity (L): 7.0 Final Transmission: Chain Transmission: Constant mesh 6-speed