Polini 3G Maxi-Speed 107mm Clutch for 2 Stroke and 4 Stroke 50cc engines. Polini’s 3G Maxi-Speed clutches have allen screws for adjusting preload on the clutch springs without having to remove the clutch from the engine! This is the type of clutch used by Polini’s race teams and it also features lightweight reinforced clutch blocks and fiber reinforced shoes for long life, good grip and superior heat resistance. Great for use on stock or modified engines. Fits the following models and many more: Honda: Ruckus 50, Metropolitan, Elite SA/SR50Aprilia: SR50, Scarabeo 50, Sport City 50Genuine: Buddy 50, Roughhouse 50Derbi: Atlantis 50, GP1 50Kymco: Agility 50, People 50, Like 50, Super 8 50, Super 9 50, ZX50, Vitality 50Malaguti: F12 Phantom, F15 FirefoxSYM: DD50, Fiddle 1 & 2, Jet 50Peugeot: Speedfight (all)Piaggio: Fly 50, Zip, Zip 2Vespa: ET2, ET4, LX 50, Primavera 50, Modern-S 50Yamaha: Jog, Zuma 50, C3, Please see our Warranty & Returns Policy.