UMI Performance 1058 Rear Upper Control Arm Chassis Mount Spacer Kit

The UMI Performance 1058 chassis mount spacer kit eliminates the factory slop and clunking noise found in 2005-2010 Ford Mustang rear upper control arm mounts. This precision-engineered solution addresses a common problem where Ford used a 14mm bolt through a 14mm hole in the upper control arm, but left an oversized 16mm hole in the chassis mount itself.

Key Features:

• Stepped design reduces chassis hole from 16mm to 14mm for precise bolt fit
• Eliminates clunking and shifting during acceleration and braking
• CNC-machined spacers slide directly into factory upper mount location
• Works with OEM upper control arm mounts and aftermarket mounts using 16mm holes
• Complete kit includes spacers for both sides
• Direct fit for 2005-2010 Ford Mustang (Does NOT fit 2011 and newer models)

Compatibility Note: This kit is designed for use with OEM upper control arm mounts or aftermarket mounts that retain the factory 16mm hole size. Most aftermarket control arm mounts use 14mm holes and will not require this spacer kit.

Installation is straightforward—the stepped spacers insert into the chassis mount and create a proper 14mm bore that matches the factory bolt diameter, ensuring a tight, rattle-free connection that restores the suspension geometry to proper tolerances.