MHR REPLICA CYLINDER KIT. The MHR Replica line of cylinders 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 an extremely long product life. To guarantee these special characteristics, Malossi MHR Replica cylinder kits have pistons with two chrome-plated rectangular rings and a compression ratio of 13.8:1, plus a torque value of 7.35 N.m (0.75 kgm) at 8,000 rpm and power of 6.6 kW (9 hp) at 8,500 rpm. The MHR line is the result of Malossi's many years of experience in European and national competition. These new cylinder kits consist principally of cylinder, piston, ring and head.