45510KCE671 Front Brake Master Cylinder for Honda CRF450 XR250 XR400 XR650

Product Overview

This front brake master cylinder is a direct replacement for select Honda off-road motorcycles, providing the hydraulic pressure needed to engage the front brake caliper. It is ideal for riders restoring or maintaining CRF and XR series bikes, ensuring reliable stopping power on trails and tracks.

Key Features & Performance

• OEM-grade construction from durable aluminum and composite materials
• Pre-assembled with plunger and reservoir for quick installation
• Features a sight glass for easy brake fluid level checks
• Designed to match original bore diameter and lever ratio for consistent braking feel
• Includes banjo bolt and copper washers for a leak-free connection (check included hardware)

Fitment & Compatibility

• Honda CRF450 (select years)
• Honda XR250 (select years)
• Honda XR400 (select years)
• Honda XR650 (select years)

Common Uses

• Replacement for worn or leaking front brake master cylinders on dirt bikes
• Restoration of vintage or modern Honda off-road motorcycles
• Upgrading from damaged OEM components during maintenance
• Trail riding, motocross, and enduro applications

Technical Specifications

• Part Number(s): 45510-KCE-671
• Product Type: Front Brake Master Cylinder
• Compatible Models: Honda CRF450, XR250, XR400, XR650

Frequently Asked Questions

Q: Will this master cylinder fit a 2003 Honda XR400? A: It is compatible with many model years of XR400, but we recommend verifying your bike’s year and comparing the banjo bolt spacing and mounting holes before purchase.

Q: Does this master cylinder come with a reservoir cap and diaphragm? A: Yes, it typically includes the reservoir cap and diaphragm, though contents may vary—please check the product listing for exact included items.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.