The motorcycle clutch starter one way clutch starter bearing is a replacement component for the overrunning clutch freewheel system.It is designed to restore function by enabling power transfer between the starter motor and engine during cranking, and disengaging once the engine starts.This part is available in configurations with 16, 18, or 20 beads to match specific model requirements. Compatible With SX-F 250 (2014–2024), SX-F 350 (2014–2024), XC-F 250 (2007–2009, 2014–2024), XC-F 350 (2014–2024), XCF-W 250 (2006–2010, 2014–2016), XCF-W 350 (2014–2022), EXC-F 250 (2006–2011, 2014–2024), EXC-F 350 (2014–2024), Freeride 250F (2018–2020), Freeride 350 (2015–2017), RC4R (2020–2023), FC 250/350 (2014–2024), FE 250/350 (2014–2024), FE 350S (2015–2024), FE 450/550/650 (2005–2008), FS 450/650 (2005–2008), FS 550 (2007), FX 350 (2017–2024), EC 250F (2021–2024), EC 350F (2021–2024), EX 250F (2021–2024), EX 350F (2021–2024), MC 250F (2021–2024), MC 350F (2022–2024), CRF250X (2004–2017), CRF450L (2019–2020), CRF450R (2018–2023), CRF450RL (2021–2023), CRF450RWE (2019–2022), CRF450RX (2017–2023), CRF450X (2005–2023), TRX450R ( start, 2006–2009), TRX450ER (2012–2014), and other models as indicated by OEM part number equivalence. Fits OEM part numbers including 79240026000, 80040026000, H25015301, 28125-MEY-671, 28125-MT7-004, and 58440026000.Constructed from forged steel with heat treatment for under standard operating conditions.Includes one one way starter clutch bearing.Installation instructions are not included. Disclaimer: This aftermarket part is not affiliated with the manufacturer.Mentioned brands/models are for compatibility identification only.