Description Malossi MHR Replica 70cc Cylinder Kit for Aprilia / Piaggio 50cc 2T Scooters The Malossi MHR Rep kit has increased port sizes, and Malossi’s 9 port design which features 2 extra ‘booster’ exhaust ports to greatly increase the flow of exhaust gasses from the cylinder. The MHR Replica also features a full alloy construction with a Nikasil bore, which is virtually indestructible. What makes this cylinder so unique is the pairing of its twin ring piston in a Nikasil bore. Against single ring (race orientated) setups the MHR rep is far more ideal for street use being more reliable and less all out aggression. It is recommended HIGHLY that this kit is accompanied by a performance exhaust. *Generic photo shown *Performance scooter parts do not come with a warranty Gasket kit PN: 117570 The MHR Replica line of cylinder was created especially for the International Scooter Trophy 70cc Automatic Class. These cylinder kits were designed to guarantee maximum performance in this category, while at the same time assuring extremely long product life. In order to guarantee these special characteristics, Malossi MHR Replica cylinder kit have pistons with two chrome-plated rectangular segmants and a compression ratio of 13.8:1, plus torque value of 7.35 N.m. (o.75 Kgm) at 8.000 rpm and power of 6.6 Kw (9 C.V.) at 8.500 rpm. The Malossi MHR Rep kit has increased port sizes, and Malossi’s 9 port design which features 2 extra ‘booster’ exhaust ports to greatly increase the flow of exhaust gasses from the cylinder. The MHR Replica also features a full alloy construction with a Nikasil bore, which is virtually indestructible. What makes this cylinder so unique is the pairing of its twin ring piston in a Nikasil bore. Against single ring (race orientated) setups the MHR rep is far more ideal for street use being more reliable and less all out aggression. The MHR line is the results of Malossi’s many years of experience in European and National competitions. Malossi scooter performance parts are designed and manufactured at Malossi’s headquarters and testing facility in Italy. Through years of research, development and testing the Malossi cylinder kits produce significantly more power than the standard factory cylinder. **When installing a 70cc kit it is necessary to increase the jet size in the carburetor. Failure to do so may cause engine damage.
