Polini hi-speed Evolution Variator D.13 Code: 241.731 Intended for racing engines, the Polini 6-roller Evolution line variator guarantees higher performance and lower maintenance costs thanks to improvements made to the lubrication of the bush and pin. Designed for Yamaha engines - 50cc Minarelli ensures lightning-fast starts and increased top speed. The Polini variator can be installed while maintaining the use of the electric starter. The kit includes the Evo-slider contrast spring increased by 8%, the anti-torsion system and the oversized chrome shaft for perfect sliding and then resistance to deformation. Features: - Specific for: Aprilia Scarabeo 50 (Yamaha) 2T air cooled
- Diameter: 13
- 100% Made in Italy
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