Promoto-MX Lean Bar Wheels for LOSI - MX040 by GPM  [MX040]

Aftermarket lean bar wheels for the Promoto-MX

This lean bar wheel assembly is made for the LOSI Promoto-MX 1/4 scale motorcycle platform and uses CNC-machined alloy parts to keep structural form under knocks while allowing controlled flex for lifelike leaning performance.

Use case: the components are suited where controlled articulation and impact resistance are needed, such as tuning sessions or durability upgrades on Promoto-MX RTR machines. Role and fit: the wheels and supplied hardware replace the stock lean bar assembly and act as a tuning item to modify lean response and robustness without affecting electronics or the drive system.

Fitment and setup advice: verify compatibility against the listed Promoto-MX part numbers, ensure bearings and shims are oriented correctly, and avoid over-tightening fasteners which can prevent the intended flex. Standard RC tools and careful chassis alignment are sufficient for installation.