Mugen MTX rear lower damper stay (7075) by Arrowmax AM-MTX-H2115  [AM-MTX-H2115]

Rear lower damper stay, 7075 aluminium

This Arrowmax AM-MTX-H2115 rear lower damper stay is an RC-scale replacement and hop-up intended for Mugen MTX series applications, specifically aligned with MTX-5 chassis layouts. Sold as a 2 pcs set, the component uses 7075 aluminum as indicated in the product name and is intended to serve as a direct replacement or upgrade for the lower damper mounting point on the rear suspension assembly.

Functionally, the rear lower damper stay locates the bottom of the shock absorber and transfers loads into the rear bulkhead and suspension arms. Swapping the stock stay for this machined 7075 unit is commonly done to maintain alignment when changing shock types, to replace worn or damaged mounts, or to standardize geometry during tuning sessions. The part is described as compatible with the MTX-5 chassis line based on the source categorization.

Installation notes: the stay is a chassis-level replacement that mounts at the existing lower damper mounting positions. When installing, confirm hole alignment and thread engagement on the chassis and suspension components, verify ride height and static droop after installation, and check for interference with adjacent linkage. No vehicle-level instructions are provided; this is for RC model use only.

Tuning role: using a 7075 aluminum lower damper stay can reduce flex at the mounting point compared with typical stock materials, helping preserve shock geometry under load. That stability aids repeatable damping setup and small-step tuning when adjusting shock oil, spring rates, or mounting positions for rear balance and traction characteristics.