UPR Billet IRS Differential Insert Kit Mustang 15-26

Improve your 2015-2026 Mustang's rear suspension performance with this UPR billet IRS differential insert kit. Designed to eliminate unwanted movement in the factory independent rear suspension (IRS) differential bushings, this 4-piece kit helps reduce wheel hop and improve traction during hard acceleration. The factory rubber bushings feature voids that allow the differential to move under load, contributing to inconsistent power delivery and unwanted suspension movement. By filling these voids, UPR's precision-machined inserts help stabilize the differential, improve handling, and promote more consistent launches. This makes the kit an excellent upgrade for Mustang owners looking to improve acceleration and potentially achieve quicker 60-foot times.

Features and Benefits:
- Designed for compatible 2015-2026 Mustangs with independent rear suspension
- 4-piece IRS differential bushing insert kit
- CNC-machined from premium 2024 billet aluminum
- 2024 aluminum offers approximately 68,000 PSI tensile strength
- Approximately 51-percent stronger than standard 6061 aluminum rated at 45,000 PSI
- Fills voids in factory rubber differential bushings
- Helps eliminate unwanted differential movement under acceleration
- Reduces wheel hop during hard launches
- Improves rear suspension stability and handling
- Enhances traction for more consistent power delivery
- Helps improve launch consistency and 60-foot times
- Maintains factory ride comfort without adding NVH
- Precision-machined components provide a tight, secure fit
- Anodized and machined finish provides a clean appearance
- Includes high-strength Grade 10.9 mounting hardware
- Ideal for street performance and drag racing applications
- Made in the USA

Compared to commonly used 6061 aluminum, the 2024 aluminum features a tensile strength of approximately 68,000 PSI versus 45,000 PSI, making it approximately 51-percent stronger. Each insert is CNC-machined for precise fitment and features an anodized and machined finish for a clean, durable appearance. The kit also includes Grade 10.9 mounting hardware for reliable installation. Best of all, the inserts reduce unwanted differential movement without introducing additional noise, vibration, or harshness (NVH). Proudly made in the USA, this kit delivers improved rear suspension stability without compromising everyday driving comfort.

Please Note: Does not fit GT350, Mach 1, or GT500.