LOSI 364000 Silver Aluminum Swing Arm for PROMOTO-MX Tamiya Semi -2° and -3° settings via

-2° and -3° settings via the included machined delrin inserts

Interior fitting: Driver's cab

Athearn RTR 71749 HO Scale EMD SD40T-2 Southern Pacific SP 8281 DC

5X9X3mm bearings

LOSI 364000 Silver Aluminum Swing Arm for PROMOTO-MX Tamiya Semi -2° and -3° settings viaLOSI 364000 Silver Aluminum Swing Arm for PROMOTO MX Take your Promoto MX to the next level by removing the stock injected molded swing arm and installing the optional aluminum swing arm for improved durability and aesthetics. The aluminum swing arm brings a significant boost in durability to your Promoto MX. Experience enhanced strength and resilience, ensuring that your RC motorcycle can handle the rigors of intense rides and challenging terrains.