MALOSSI SECONDARY GEAR/OVERDRIVE GEARS 16/42 TEETH VESPA ET/LX/S/PRIMAVERA

We know how it goes: you've done your best to tune up your motor to bring it up to an appreciable performance level - then find that your speed isn't going up because the original transmission only helps with acceleration, rather than bringing the power up where you really want it. Always at the limit, your motor works it's heart out for you. Which in turn means stress, wear and tear for the crankcase, bearings and piston.

A longer transmission gives you the chance to get the same speed - but at lower rpm's for a healthier motor. Give yourself an extra margin and more performance without extra stress on inclines. The lost acceleration can be made up with a variator readjustment.