The engine on the FREERIDE 350 is based on the successful power unit of the 350 EXC-F. Nevertheless, it has been optimised for the most harmonious torque progression possible and further refined for MY 2015. The new crankshaft drives a laterally positioned intermediate shaft that also acts as a balancer shaft, water pump and timing chain drive for the two camshafts. A revised exhaust camshaft with optimised auto-decompression ensures improved starting behaviour. The four steel valves, now with reinforced spring retainers, are actuated by two overhead camshafts and DLC-coated cam followers. In conjunction with a new gasket, a redesigned water-pump cover guarantees easier fitting and better sealing, even in extreme temperatures. Well-protected behind the cylinder, the electric starter is equipped for the new model year with a reinforced freewheel. With state-of-the-art, closed-loop lambda control, the Keihin engine management system, featuring electronic fuel injection and 42-millimetre throttle valve diameter, ensures efficient exhaust gas purification by the two catalytic converters and very low fuel consumption for an offroad bike. Additional engine characteristics can be activated with an optional PowerParts map-select switch.