FULL CYLINDER KIT 300 ATHENA - INCLUDES: PISTON, GASKET AND CYLINDER The CRF300RX Enduro shares the engine with its 250 2021 brother, but features revised ignition and fueling mappings for a gradual and more manageable power delivery on the diversified funds typical of the enduro. Max power is at 11,300rpm and maximum torque is at 9,500rpm. The rev limiter is at 14,300rpm, in...