Polini Hi-Speed CVT transmission kit for Minarelli long-stroke engines and Aerox scooters. This advanced variator system succeeds Polini's Speed Control with optimized roller tracks, bushings, and drive face geometry for superior power delivery and acceleration response.

Engineered for measurable gains in throttle response and mid-range punch when paired with correctly matched roller weights for your riding style and engine tune. 

Complete kit includes :

• CVT unit with ramp plate and sleeve 
• dual roller weight sets (5.6g and 6.9g, 16x13mm)
• reinforced clutch springs
• heavy-duty drive belt
• dual torque springs (22kg and 28kg ratings)
• Polini's Evo Slider anti-torsion spring seat for stable engagement across the rev range.