LOSI PROMOTO-MX 7075 Aluminum Rear Wheel Reinforcement Rings by GPM MX0505R  [MX0505R]

Rear wheel reinforcement for PROMOTO-MX

This aluminum rear wheel reinforcement ring set is an RC-scale upgrade intended for LOSI PROMOTO-MX platforms. The parts are made from 7075 aluminum to increase wear resistance where plastic or thin stamped rings may deform under load during aggressive riding or routine maintenance checks.

The kit is presented as a direct-fit reinforcement solution for the rear wheel assembly, intended to stabilize the wheel mounting area and reduce edge wear on wheel hubs under torque and lateral loads. Installation focuses on replacing or reinforcing the existing wheel rings, using the supplied fasteners to maintain factory alignment and clearances.

Technically this part plays a tuning role rather than changing suspension or drive geometry: it helps keep wheel mounting surfaces rigid, which can reduce repeatable play and make setup adjustments more consistent when fine-tuning rear-end behavior for track or backyard use.

This reinforcement ring set is a compact, material-focused upgrade for LOSI PROMOTO-MX owners who prefer a stiffer rear wheel mounting interface without altering core drivetrain or suspension components.