The RR 300 2 Stroke has received the most substantial and far-reaching modifications of the entire range. The new engine, combined with a dedicated new engine control unit map, boasts smoother and more progressive response to throttle input and more linear power delivery. Despite the significant hike in maximum power, the bike as a whole is also easier to handle and more intuitive and forgiving to use than before.
Engine: the engine has been completely revised, with an all-new larger bore cylinder, a new piston
and a new power valve;
Crankshaft: new shorter throw crankshaft, for a shorter piston stroke than the previous model;
Cylinder head: the head is also completely new, and has been redesigned in consideration of the other new components and the new iridium spark plug;
Silencer: the smaller diameter silencer improves the top-end performance and tractability of the engine;
Clutch with diaphragm springs: the 300 model gains a new clutch, with smoother and less strenuous control action, more effective engagement and increased transmissible torque. This clutch also features mechanically adjustable spring preload, offering a choice of 3 settings with a specific adjuster ring.