Motorcycle engine starter clutch assembly with one-way bearing for TTR250, XT250 Tricker, TT250R, and Serow 250 models.Constructed from metal.Compatible with OEM part numbers 4GY-15515-00-00, 4GY-15590-00-00, 1S4-15515-00-00, and 5BP-15590-00-00.Direct replacement for.Fits TTR250 (TT-R250) 1999–2006, XT250 Tricker 250, TT250R Raid 1993–2004, and Serow 250.