Model Compatibility: Fits 125cc and 140cc pit bikes requiring a twin piston rear hydraulic brake caliper bracket. Function Type: Replacement rear hydraulic brake caliper bracket designed for twin piston brake caliper mounting. Application Scope: Intended for use on pit bike models with rear hydraulic braking systems matching the specified displacement range. Design Feature: Bracket accommodates twin piston hydraulic brake calipers as indicated by the product title designation. Installation Purpose: Restores rear brake caliper mounting configuration on compatible 125cc and 140cc pit bikes., Manufacturer: GAAuhsdHA