Ultimate Engines have introduced their new M814 .21 off road engine which is based on the successful M8 engine with a few improvements. The cooling head has been redesigned to remove weight for lowering the centre of gravity, as well as to increase the surface of the cooling area. Furthermore, this CNC machined cooling head has been modified to make adjusting the idle easier. In addition the mounting points of the crankcase have also been modified to avoid rubbing the rear centre shaft. Ultimate also have their new EFRA 2119 off road Super Strong Tuned Pipe set w/ Manifold that has been developed to provide a good balance of top end, and low end power with good run time. Available as combos, which include the engine, complete pipe set, clutch, clutch bell, air filter and foam, they also now supply the engines and pipe alone without combo.