Brake Master Cylinder For Honda XR CR CRF XL NX XR250 NX250 CRF150 CR500

Brake Master Cylinder for Honda XR CR CRF XL NX

This brake master cylinder is a direct replacement hydraulic pump assembly for Honda XR, CR, CRF, XL, NX and XR250, NX250, CRF150 and CR500 models, converting lever input into hydraulic pressure to actuate the front or rear brake caliper.

Overview

This brake master cylinder serves as the hydraulic heart of the braking system on Honda XR CR CRF XL NX models, pushing fluid through the lines to engage the caliper when the lever or pedal is applied. Riders dealing with a spongy lever, fluid leaks, or a seized piston will find this brake master cylinder a practical replacement that restores firm, predictable braking feel. It is aimed at home mechanics and shops servicing Honda dirt bikes and dual-sports across the XR, CR, CRF, XL and NX families.

Built For Performance

• Cast body construction engineered to withstand repeated hydraulic pressure cycles
• Internal piston and seal assembly designed to hold fluid without weeping
• Reservoir and cap layout matched to factory mounting points for drop-in fitting
• Lever or pedal pivot bore sized for the original actuator hardware
• Threaded outlet port ready to accept the standard banjo bolt or brake line fitting
• Surface finish chosen to resist corrosion from mud, water and brake fluid exposure

Fits These Machines

• for Honda XR250
• for Honda NX250
• for Honda CRF150
• for Honda CR500
• for Honda XR, CR, CRF, XL and NX series models sharing this master cylinder layout

On-The-Job Use

• Trail and enduro riding where consistent brake feel matters on long descents
• Motocross and off-road race bikes needing a reliable replacement after crash damage
• Dual-sport and commuter use on XL and NX models that see daily road miles
• Workshop servicing and restoration projects bringing older Honda dirt bikes back to spec

Specs At A Glance

Good To Know

Q: Do I need to bleed the brakes after installing this master cylinder? A: Yes, air must be purged from the lines and caliper after fitting a new master cylinder. Bleed until the lever or pedal feels firm and no bubbles rise from the reservoir.

Q: Will this fit both front and rear brake setups? A: Fitment depends on the specific Honda model and which brake circuit the master cylinder is designed for. Confirm the mounting points and line orientation on your machine before ordering.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.