Sports exhaust system optimized for 70cc cylinders on Peugeot vertical 2-stroke 50cc engines. is always striving to offer the perfect product and they believe they have found it with the R system. Developed from the Z system and perfectly adapted to suit 70cc sports and mid-race cylinders, the R provides a little more volume and a slightly wider cone, which translates to a greater efficiency and a higher level of performance on these big bore cylinders. Whilst developed specifically for uprated cylinders the R Exhaust also performs admirably in conjunction with a standard 50cc cylinder. This scooter exhaust system is supplied as per the image, with a high-quality carbon silencer, exhaust gasket and complete mounting kit. *Please note this exhaust is E-Marked and is therefore fitted with a restrictor washer in the down-pipe. The restrictor washer can be easily removed to increase performance, but if you do remove the washer then you may also need to make adjustments to the jetting in the carburettor and rollers weights in your variator in order to tune the engine properly and achieve optimum performance.