USERX Motorcycle modification accessories hydraulic brake lower pump rear brake disc brake caliper For CA250 This hydraulic brake lower pump is designed for rear disc brake systems on CA250 motorcycles.It supports brake fluid circulation and pressure transmission to the caliper, contributing to consistent braking function.The unit is engineered for integration with compatible master cylinders and brake lines.Installation requires alignment with the motorcycle's existing brake setup.The caliper mounts to the swingarm and works with standard rotor sizes.Components are constructed to withstand typical operating conditions associated with motorcycle braking systems.This is an aftermarket spare.Brand and model mentions do not imply manufacturer association.