UPR Mustang S550 / S650 IRS Subframe Bushing Lockout Kit

Improve traction, eliminate unwanted rear suspension movement, and reduce wheel hop with the UPR Billet IRS Subframe Bushing Lockout Kit for 2015-2026 Ford Mustang models equipped with an Independent Rear Suspension (IRS). This precision-engineered 10-piece kit fills the voids in the factory rubber subframe bushings, preventing excessive cradle movement during hard acceleration while improving overall chassis stability and handling.

Unlike competing kits manufactured from 6061 aluminum, UPR machines each component from premium 7075 billet aluminum, providing nearly twice the strength while maintaining a lightweight design. The result is improved suspension performance, reduced wheel hop, and more consistent launches without introducing additional noise, vibration, or harshness into the vehicle. Installation can typically be completed in approximately 45 minutes.

Key Features

Fits 2015-2026 Ford Mustang IRS-equipped vehicles.
10-piece IRS subframe bushing lockout kit.
Reduces IRS cradle movement under acceleration.
Helps eliminate wheel hop.
Improves overall handling and chassis stability.
Can improve 60-foot launch times.
CNC machined from premium 7075 billet aluminum.
7075 aluminum provides nearly twice the strength of 6061 aluminum.
Machined finish.
Maintains factory ride quality without adding noticeable noise, vibration, or harshness (NVH).
Typical installation time of approximately 45 minutes.
Made in the USA.