Pro Replica MK2 is a "E-pass" exhaust system that gives the best effect between 7,500-10,000 rpm!
Best suited with 70cc sport cylinders.
50cc Original = 7,36 hp/6,41 Nm
50cc Streetrace (27938) = 8,79 hp/6,37 Nm
70cc Streetrace (27944) = 10,74 hp/8,51 Nm