The new HI-SPEED variator kit includes rollers, compressing spring and clutch spring and offers improved starts and power output across the rev range even on 50cc displacements. The new half-pulley, die cast in light alloy of high siliceous content, is manufactured with new inclinations of the roller sliding surfaces. The compression spring also has a balanced charge which improves the power output at every rpm.
Polini product code: 241.704
RRP: 52 Euros (£40.92) + VAT
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