Motorcycle Starter One Way Clutch Sprag Bearing for Yamaha YFZ450 YFZ450S YFZ450SEY YFZ450SPX YFZ450T YFZ450V YFZ450W YFZ450X ATV Motocross Replacement Parts - MotorWant

Motorcycle Starter One Way Clutch Sprag Bearing for Yamaha YFZ450 Series

This high-quality Motorcycle Starter One Way Clutch is designed specifically for Yamaha YFZ450 ATV and motocross models, providing reliable engine starting performance and long-lasting durability. It is a direct aftermarket replacement for OEM part number 5TG-15590-00 and fits multiple YFZ450 variants from 2004 to 2009.

Manufactured from durable aluminum alloy and precision-engineered materials, this sprag bearing ensures smooth one-way rotation, allowing the starter motor to engage the crankshaft efficiently while preventing reverse force damage to the starter system.

This component plays a critical role in the engine starting process, delivering stable power transfer and protecting the motor system from excessive wear. It is ideal for riders looking to restore or upgrade their ATV starting performance.

Features

• High-quality aftermarket replacement starter clutch
• One-way sprag bearing design for smooth engagement
• Durable aluminum alloy construction
• Prevents reverse motor resistance damage
• Ensures stable and efficient engine starting performance
• Precision engineered for long service life
• Direct replacement for OEM part 5TG-15590-00

Fitment

Compatible with Yamaha YFZ450 series:

• YFZ450 (2004–2006)
• YFZ450S (2004)
• YFZ450SEY (2009)
• YFZ450SPX (2008)
• YFZ450T (2005)
• YFZ450V (2006)
• YFZ450W (2007)
• YFZ450X (2008)
• YFZ450Y (2009)

Function

• Transfers starter motor power to crankshaft
• Enables smooth engine ignition
• Prevents backflow and reverse resistance damage
• Improves overall starting reliability

Package Includes

• 1 × Motorcycle Starter One Way Clutch (Sprag Bearing)