ヤマハ製ダートバイク用スタータークラッチ・ワンウェイベアリング。WR250F、WR450F、YFZ450、YFZ450、Se 、Se 、Ii 、およびYFZ450Rの各モデル（2003年～2025年式、ビル・バランス・エディションおよび限定モデル）にダイレクトフィットします。

Starter Clutch One-Way Bearing for Dirt Bikes, Single-Pack
✔️ Outer Ø83mm (3.3 in), inner Ø41mm (1.6 in), height 13.7mm

This starter clutch one-way bearing is a direct-fit replacement for select dirt bikes, including WR and YFZ series. It engages during starting and prevents back-torque during engine operation, helping smooth startups and protection of the starting system. Ideal for maintenance, rebuilds, and race-prep in off-road bikes.

✅ Outer diameter: 83 mm (3.3 in)
✅ Inner diameter: 41 mm (1.6 in)
✅ Height: 13.7 mm (0.5 in)
✅ Compatibility: WR250F (2003-2018); WR450F (2003-2018); YFZ450 (2004-2017); YFZ450 Bill Ballance Edition (2006-2007); YFZ450 Limited Edition (2004); YFZ450 SE (2005-2008); YFZ450 SE II (2007-2008); YFZ450R (2009-2025); YFZ450R SE (2009-2025); YFZ450X (2010-2011); YFZ450X Bill Ballance Edition (2010)
✅ Part numbers: 92048-1090, 92048-0002
✅ Order includes: 1x Starter Clutch One Way Bearing

💡 What is a starter clutch one-way bearing used for in dirt bike engines? - It allows the crank to rotate in one direction during starting and prevents back-torque during operation - It helps ensure quick, reliable starts on a range of WR and YFZ models - When replacing, verify outer diameter 83 mm and inner diameter 41 mm to confirm proper fit