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Description
Gearbox output pinion (chain) in width 420 for mécaboite 50cc engine DERBI SENDA / GPR / GSM until 2005. Good quality (less good all the same than France equipment or other major brand). Available in 11, 12, 13, 14 or 15 teeth and remember that a larger pinion brings more top speed but less acceleration and vice versa.
Remember to choose the right model of pinion before purchase.