The Beta technicians, working in close contact with HGS, have developed a new Exhaust that considerably amplifies the spectrum of use of Beta models, making the XTrainer especially suitable for Extreme Enduro use. While some riders like to run their engines at the maximum revs available, many others prefer to enjoy the torque qualities of Beta Enduro models, and this is particularly true when used on Hard Enduro courses, where speeds are sometimes particularly low, uphill restarts extremely complicated and obstacles to be overcome require a very full power delivery at low revs. As can be seen from the torque and power graphs, the new exhaust improves the power delivery compared to the original system on the XTrainer, allowing an increase in torque and maximum power values right from low revs, while maintaining the fluidity and progressiveness typical of Beta 250 and 300 engines. In order to achieve optimum performance, a carburettor overhaul is required on the XTrainer, with the replacement of the max jet of the original carburettor with the new one supplied. The system, specifically designed for XTrainer, is also compatible with RR 250 and 300 MY20+ models.