KIFLY Handcrafted VMC Muffler for Vespa Primavera, Special complete with 62 mm silencer attachment

KIFLY 62 Racing Muffler Handcrafted muffler for Vespa 125 Et3, Primavera, Special and PK. On PK frames, part of the internal bulkhead supporting the spare wheel must be cut. NOT COMPATIBLE WITH FRAMES WITH SIDE DRAWERS SUCH AS ET3 OR PRIMAVERA. Excellent for VMC ET7, M1L, 135 Polini Evo 2, Parmakit wforce, Pinasco Zuera big bore etc. thermal units. The exhaust manifold has a flange with slotted holes and fits 56 and 62 mm centre distances. The inlet diameter of the manifold is 36 mm, calculated for phases of approximately 128°/188°, but it adapts to a wider range. It has a sharp torque delivery typical of 2-stroke racing engines, with a rev limit that can reach well over 12,000 rpm. With the above-mentioned cylinders, it is very likely that the gearbox will need to be shortened to bring the third and fourth gears closer together.