Black Rear A-Arms for Mini-B (2) (RPM72312)

Two rear A-arm upgrades for the Losi Mini-B are available: RPM Black Rear A-Arms for Mini-B and the Heavy-Duty Rear A-Arms option. These replacement arms are designed to extend the life of the Mini-B by standing up to impacts and rough terrain, while maintaining lightweight performance for nimble handling.

Made from engineering-grade nylon for a balance of light weight and strength, they feature inner hinge pin bosses roughly 20% thicker than stock, overall thickness increased by about 25%, and thicker support beams by roughly 50% for added rigidity. A shock surround protects the lower shock end and the pivot ball is captured to reduce exposure to damage, helping arms endure harder landings and tougher conditions over time.