MX035 is a CNC-friendly front brake caliper designed for LOSI PROMOTO-MX 1/4 motorcycle RTR platforms, manufactured from 7075 aluminium to provide higher stiffness and repeatable mounting geometry in the brake assembly. The following content details precise fitment, installation considerations, and how the caliper contributes to tuning brake actuation without implying on-road use.
The aluminium caliper supersedes the stock plastic component to deliver a solid mounting point for the brake interface and to accept the supplied Grade 12.9 fasteners. It preserves the original mounting pattern so it interfaces cleanly with the existing actuating linkage and brake disk on the specified PROMOTO-MX RTR variants.
LOS262009
For technical builders seeking a durable metal upgrade on the listed PROMOTO-MX kits, MX035 offers tighter mounting tolerance and improved hardware retention; validate disc alignment, torque sequence, and linkage engagement during installation.