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Polini Hi-Speed variable speed drives are the direct result of racing development and are designed to improve the performance of your scooter transmission.
Concentrated performance and reliability
Ensures maximum transmission efficiency
Higher rotational speed: improved acceleration and pick-up
Hardened and ground special nickel-chromium steel ring
Constant shaft lubrication, even under the most extreme operating conditions
Minimal friction: special treatment of the inner tracks of pebbles
Complete drive supplied with 1 set of 12 25x11 rollers: 6.5g