The Honda OEM Front Brake Master Cylinder 45510-HN5-671 is a high-quality replacement part designed to restore the braking performance of your Honda ATV. Compatible with a wide array of models, including ATC200X, TRX250, TRX300, TRX420, TRX500, and TRX520, this master cylinder ensures consistent and safe braking in all terrains.
This genuine replacement part is built to Honda’s strict quality standards, providing a perfect fit and reliable performance for extended use. With plug-and-play installation, it’s the ideal choice for repairing or upgrading your ATV’s braking system.
Key Features:
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Broad Compatibility: Fits a wide range of Honda models, including:
- 1986-1987 ATC200X
- 1985-1986 ATC250R
- 1985-1986 ATC350X
- 1986-1997 TRX200
- 1986-2020 TRX250
- 1988-2000 TRX300 (except TRX300FW)
- 2000-2003 TRX350
- 2014-2021 TRX420
- 2014-2019 TRX500
- 2020-2021 TRX520
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OEM Part Numbers:
- 45510-HN5-671
- 45510-HR3-305
- 45510-HR3-A21
- Additional references: 45510-HC4-305, 45510-HM4-830, and more.
- Durable Construction: Engineered with high-quality materials to ensure long-lasting performance under rugged conditions.
- Precise Fit: Designed to meet Honda’s exact specifications for seamless compatibility and reliable braking performance.
- Easy Installation: Plug-and-play design allows for quick and hassle-free replacement, restoring your ATV’s brake functionality in no time.
Technical Specifications:
- Part Number: 45510-HN5-671
- Fitment: Honda ATC and TRX models from 1986 to 2021
- Function: Front brake master cylinder
- Compatibility: See full model list above for details
Applications:
The Honda OEM Front Brake Master Cylinder 45510-HN5-671 is ideal for:
- Replacing worn or malfunctioning master cylinders on Honda ATC and TRX models.
- Restoring safe and reliable braking performance for off-road adventures.
- Maintaining factory-level braking standards with genuine OEM quality.

