Stage6 primary gear-up kit for Yamaha Aerox/ Minarelli horizontal 50cc 2-stroke scooters.

Stage6 primary gear-up kit developed for tuned engine setups requiring taller gearing. The gear unit comes ready-pressed for straightforward installation, so there is no need to press the gears together. Simply remove the original assembly and replace it with the Stage6 unit.

Primary 14/42 (overall ratio 1:3.00) 

Important: Only suitable for tuned engines! Standard cylinders generally lack the power required to pull this gearing.

Check the tooth count of the original intermediate shaft before ordering! The replacement must have the same number of teeth.

Stage6 S6-2016613P, S6-2016612P