"Primary ratio steel 69/27"
Urgently necessary to extend the translation for tuned engines. As a result, the engine speed is reduced, the top speed increases and the engine lives longer.
Attention: A press is required to install these ratios, since original gears have to be replaced with the new ones.
RMS Italy is one of the largest producers of manufacturer-independent spare and wear parts for scooters and bicycles. The company is based in Santa Valeria, Seregno in Italy.