DESCRIPTION: Polini Crankshaft for Horizontal Minarelli Engines.This Polini full circle crankshaft has been balanced and features an oversized, strengthened connecting rod, making it suitable as both a stock replacement crank and a race crank.Fits the following and more:Yamaha: Jog (92-01), Zuma (02-12), Vino 50Adly: Silver Fox 50Aprilia: SR50 (94-00), Scarabeo 50 (93-06)Malaguti: Ciak, F10, F12 and F15 A/C, and Yesterday 50Eton: Beamer 2, Viper 50 ATV39.2mm StrokeFull Circle CrankCompatible with 10mm Wrist PinDoes Not Include Crank BearingsIncludes Wrist Pin BearingAprilia, Eton Beamer II (49cc) 05-06, Malaguti Ciak 50 (49cc) ’02-’05, Malaguti F12 Phantom (49cc) ’02-’05, Malaguti F15 Firefox (49cc) ’02-’05, Malaguti Yesterday (49cc) ’01-’06, Yamaha, Yamaha Jog