Mugen MRX-5 Front Upper Arm Bush Kit - Arrowmax AM-MRX5-H2120A  [AM-MRX5-H2120A]

Front upper arm pivot bush kit

This bush set is a scale RC accessory intended for the front upper arm mount of Mugen MRX-5 chassis, supplied under Arrowmax part AM-MRX5-H2120A. The description here highlights correct fitment steps, installation precautions, and the function of the bushes in suspension setup without stating unconfirmed material information.

Service guidance: use this kit when bushes show wear or after repairs to recover steering accuracy and suspension geometry. The bushes engage directly with the front upper arm mount and affect pivot alignment, so inspect arm bores and mounting surfaces before pressing new parts in. Secure the model chassis and follow standard teardown procedures during replacement.

Tuning benefits: properly installed bushes help keep articulation smooth and alignment consistent across runs, aiding predictable handling while testing setup changes. When changing camber or toe via upper arm adjustments, check bush seating and clearance as part of your setup checks.

For MRX-5 racers and hobbyists needing a direct replacement for front upper arm bushes, the Arrowmax AM-MRX5-H2120A serves to restore mount accuracy and supports repeatable suspension setup.