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Only use with tuning kits! Original cylinders are normally not powerful enough to pull this sort of gearing.
Taller gears in the transmission reduce the overall reduction factor of the gearbox. If the engine is powerful enough to pull the taller gears, this modification will also raise top speed.
Contrary to common gear units, the ones from Stage6 come ready pressed and are available at an unbeatable price. Simply replace the old gear unit with the new one - and that's it!
Primary 16/49 (1:3.06)
Stage6 S6-2016901P
As soon as we get new stock for Stage6 Primary Gear Kit - Aprilia SR50, we'll send you an email.