All Balls Racing
Back to MX Drivetrain - Sprockets, Chains, Wheel Bearings

Clutch Master Cylinder Rebuild Kit — Honda CRF250RWE/CRF450R +3 more (2021-2025)

Part # 18-4030
Item #138911
Fits 5 motorcycles
  • Honda
    • CRF250RWE · 2025
    • CRF450R · 2021–2025
    • CRF450R-S · 2023–2024
    • CRF450RWE · 2021–2025
    • CRF450RX · 2021–2025
$35.30 $33.54 Save $1.76
/
Shipping calculated at checkout.
  • In stock, ready to ship
  • Backordered, shipping soon
  • Free U.S. shipping on orders $150+ ($15 flat under)
  • Ships from one of three U.S. warehouses
  • Secure checkout
WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov
All Balls Racing Clutch Master Cylinder Rebuild Kit — Honda CRF250RWE (2025) + 4 more
Product Details

Caliper pistons stuck, sticky lever feel, or a creeping low fluid level with no visible leak — the rubber seals inside the caliper or master cylinder are toast. All Balls rebuild kits include every rubber part you need to make ONE caliper or master cylinder new again: piston seals, dust boots, bleeder caps, pad pins, copper crush washers. OEM-spec EPDM rubber, bike-specific fitment.

Kit fits the bikes listed below. Confirm whether you need front or rear (some bikes share a kit, most don't).

Fits:

  • Honda CRF250RWE (2025)
  • Honda CRF450R (2021-2025)
  • Honda CRF450R-S (2023-2024)
  • Honda CRF450RWE (2021-2025)
  • Honda CRF450RX (2021-2025)

Kit contents:

  • 1x Boot
  • 1x Master Cylinder Piston Set
  • 2x Screw
  • 1x Snap Ring
  • 2x Washer

You may also like