The FIFTY is the economical version of the VMC Strike muffler.
It is less finished and features a different silencer and a slightly smaller manifold than its sister Vmc Strike,

but the rest of the measurements are almost the same.

It fits on Et3 frames with the side box, on Pk frames you need to cut the bulkhead slightly to make the expansion bend go through

Designed to perform best on 122/175 stages fits most classic cylinders on the market and a wider range of stages.

Fits very well on both 100cc short stroke and 130cc long stroke cylinders.

The manifold has an average cross section of about 25-26mm.

The interior may have a portion of pipe inside the duct that must be filed to make a duct free of obstructions to the passage of exhaust gas flow.

Good for Pro Cup 3, VMC T-56 100cc, VMC 100 RVA Lamellar, Polini and Malossi cast-iron, M1 and similar thermic units

It has a delivery with very generous torque from the mid-range with an out-rpm that can reach almost 10 thousand rpm depending on the processing.

It turns the Vespa engine sound from a classic scooter into a classic 2-stroke racing motorcycle.

AFTER USE AFFIX OIL TO THE MUFFLER WHILE STILL HOT TO PREVENT SURFACE RUSTING