Stage6 Primary Gear 13*39 Kit (Aprilia, Piaggio, Vespa 50)
Description: Stage6 Primary Gear 13*39 Kit for Aprilia, Piaggio 50, Vespa 2-stroke engines. 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 the top speed. Only use with tuning kits! Original cylinders are normally not powerful enough to pull this sort of gearing. 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! Attention! Since 8/98, primary shafts with bearings are used. Please check before ordering.
Include the following Transmission gear kit.
• 1x Front Counter Shaft Teeth: 13 / Spline L: mm / OD: mm / Overall L: mm
• Gear Press-On Area L: mm x OD: mm / Ends L: mm x OD: mm
• 1x Rear Final Drive Gear Teeth: 39 / Inner Spline:
• OD: mm / ID: mm / W: 1mm
• 1x Clutch Drive Shaft Teeth: / Inner Spline:
• OD: mm / ID: mm / W: mm
• Made in Taiwan
• Fit Aprilia 49/50cc
• Fit Piaggio 49/50cc
• Fit Vespa 49/50cc
Supported Models: Aprilia Mojito, Aprilia Scarabeo 4T, Aprilia Sport City One, Aprilia Sr R Factory, Aprilia Sr Street, Piaggio Fly, Piaggio Typhoon, Piaggio Vespa, Various unlisted makes/models
Item Weight & Package Dimensions:
• 1.281 pounds | 6.5" (L) x 5.5" (W) x 1.308" (H)