Description Primary Gears Minarelli scootersStage6 Primary Transmission 13/43 (3.31), Minarelli, for original intermediate shaft with 14 teeth, extended gearbox, pre-pressed.Suitable for all Minarelli engines (Areox, Booster, F12 etc...)Caution: On the original gearbox, there are different versions of the middle gear pair. This gearbox fits if the small gear on the intermediate shaft has 14 teeth.Changing gear ratioTo extend the final drive ratio, you need a longer gearbox. If the engine has enough power to pull the taller gearing, top speed will increase. Stock cylinders don’t have the power to pull a longer gearbox, so it should only be used with performance cylinders.Unlike most other aftermarket gear sets, Stage6 gearboxes come pre-pressed at an unbeatable price. All you have to do is get take out your old transmission gears and replace them with the new gears, close the cover - done!Attention: This gearbox fits on engines with 14 teeth on original intermediate shaft, please count!To calculate the percent increase of your transmission ratio you need the ratios of both the original and the new tuning gears. Now divide the ratio of the original gearing by the ratio of the tuning gearing, subtract 1 and multiply the result by –100.Example: ((2.56 : 3.07)-1) x (-100) = 16.62 %Always keep in mind: The smaller the ratio / numerical number, the taller the gearing!!! Number of teeth: 13/43 (1:3.31) Questions about the product

• Brand: Stage6
• SKU: S6-2016602P
• Availability: In stock

Notes and Safety Scooter gearboxThe transmission of scooters and some mopeds is located in a case behind the clutch and torque driver and has the function of reducing rpm and ultimately driving the wheel axle.The transmission of a scooter has a direct influence on top speed. If the engine develops enough power and torque at low rpm, you can choose a longer gear ratio to achieve a higher top speed without any noticeable loss in acceleration.Please note: if you don't have a press, better choose pre-assembled gears!