Polini secondary gearCode: 202.1402Made with the utmost care and precision, Polini gears are an essential step in upgrading the performance of your engine. In some cases it is possible to vary the initial gear ratio allowing maximum versatility and customization. The processing of Polini components is more accurate than the respective original OEM components, consequently the robustness is increased with the use of metal alloys specifically designed for the purpose. Features: - Specific for: Aprilia SR50 R-Factory Motore Piaggio E4 2T water cooled
- gear teeth: Z=16-47
- Note: Bearing mod.99
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