Oversize variator Polini Hi-Speed Evolution 2Variator Polini Hi Speed Evolution 2 D.16mm Piaggio Zip / Typhoon, for Piaggio engines with 16mm variator stub.The Polini Hi Speed Evolution 2 for Piaggio is an oversize model and should be used with a matching oversize pulley, oversize rear pulley and oversize V-belt.The Hi Speed variators are ideal for highly tuned racing engines.Performance Polini Hi-Speed EVO 2This is the EVO 2, which is the further developed and improved version of the already very powerful Hi-Speed CVT. Polini used their many years of experience and considerable know-how to develop a variator that, compared to the standard variator, gets a clear power boost from the engine, with stable power transmission and improved acceleration across the entire speed range. Your scooter will rev more aggressively and reach higher top speeds.For the EVO 2 version the Polini engineers opted for a DLC (Diamond Light Carbon) bushing - light, low friction, sturdy. Two high quality oil seals ensure constant lubrication. The cores of the variator roller weights have polished sliding surfaces, the outside shells come with a heat- and wear-resistant Nylon / Aramid coating. The contra spring (plus anti-torsion spring seat) has a spring tension of +8%, so it is a bit harder than the stock spring.Advantages of oversize CVTOversize CVT systems extend the entire transmission range and can handle much more power than standard CVTs, which primarily pays off in the upper speed range. They are therefore primarily intended for powerful engines with a lot of power at high RPM. They result in smooth shifting behavior and prevent RPM fluctuations.While oversize variators can be used with a standard pulley, optimal performance is achieved only with an oversize pulley and a longer oversize drive belt.Contents Polini Hi-Speed EvoVariator with ramp plate2 sets of 6 weights 19x15,5 mm (3.8 and4.3 g)Torque spring with Evo Slider seat1 tube of pulley greaseAttention: The bush has a 16mm diameter, so it must be used with a 16mm crankshaft stub (smooth) as is usual with Polini Evolution crankshafts, for example.

• Brand: Polini
• SKU: U241.751
• Availability: In stock

Notes and Safety Polini Hi-SpeedThe famous Polini brand lists their "Hi-Speed" CVT as part of their catalog for many years. Of course, the CVT has been upgraded and improved over time, but the basic principle is still the same: a tuning variator for original and slightly tuned engines with a noticeable increase in performance compared to the original variator.Performance Polini High Speed CVTWith newly calculated and optimized angles, the Hi-Speed variator allows an extended power band. This shows above all in noticeably better acceleration, but also in a slightly higher top speed.Two integrated O-rings provide the sleeve with better lubrication, resulting in less friction.The low-friction,