Yamaha B3J-21610-00-00 - 4-Stroke Rear Fender is a Yamaha Genuine accessory designed for specific YZ and WR models to serve as a rear fender replacement or upgrade.

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Key Features & Benefits

• Yamaha Genuine Fender designed specifically for your motorcycle
• Durable, impact-resistant plastic construction
• Direct bolt-on fit — no drilling or modification needed
• Protects the rider and internals from mud, rocks, and roost

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Fits These Yamaha Models

Yamaha Model	Compatible Years
WR250F	2020-2024
WR450F	2019-2023
YZ250FX	2020-2024
YZ450FX	2019-2023

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Frequently Asked Questions

What is Yamaha part B3J-21610-00-00?

B3J-21610-00-00 is the Yamaha 4-Stroke Rear Fender, an accessory designed for select Yamaha WR and YZ models to serve as a rear fender.

Is B3J-21610-00-00 a Yamaha accessory?

Yes, B3J-21610-00-00 is a Yamaha Genuine accessory intended for specific Yamaha motorcycle models.

Which Yamaha models fit B3J-21610-00-00?

This rear fender fits multiple WR and YZ models including WR250F (2020-2024), WR450F (2019-2023), YZ250F (2019-2027), YZ450F (2018-2025), YZ250FX (2020-2027), and YZ450FX (2019-2026). Confirm model and year fitment before ordering.

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WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.