Steeda 'Stop The Hop' Handling Enthusiast Kit (555-4456-H) – 2015–2026 Mustang
Take control of your Mustang’s rear suspension and eliminate frustrating wheel hop with the Steeda 'Stop The Hop' Handling Enthusiast Kit. Designed for S550 and S650 Mustangs, this kit provides the ultimate foundation for improved traction, predictable handling, and confidence on both the street and track—all while staying budget-friendly.
From autocross to weekend cruises, this package targets the IRS subframe’s biggest weak points. By tightening up factory voids, bracing key mounting locations, and stabilizing the differential, Steeda ensures your Mustang feels planted and composed under hard launches, aggressive cornering, and high-speed braking.
Kit Components:
- IRS Subframe Alignment Kit (555-4438) – CNC-machined Delrin inserts square up the subframe and reduce unwanted movement.
- IRS Subframe Bushing Support System (555-4437) – Patented billet 6061 aluminum supports eliminate vertical subframe deflection.
- IRS Subframe Support Braces (555-5754) – Chrome-moly 5-point brace ties the subframe to the chassis for unbeatable rigidity (not for convertibles).
- Adjustable Differential Bushing Insert System (555-4443) – Polyurethane bushings minimize differential movement for sharper handling and traction.
Key Benefits:
- Eliminates wheel hop and subframe movement
- Improves traction, handling, and stability
- Minimizes differential movement under load
- Squares subframe to chassis for consistent alignment
- Simple bolt-in installation, no permanent modifications
- May increase NVH due to stiffer bushings
- Perfect for daily driving, autocross, or road course use
If you’re tired of unpredictable launches and want a Mustang that feels tight, responsive, and track-ready, the Steeda 'Stop The Hop' Handling Enthusiast Kit is your go-to solution. Engineered, tested, and built in the USA by Steeda—where performance meets precision.
Fitment:
- 2015 Ford Mustang
- 2016 Ford Mustang
- 2017 Ford Mustang
- 2018 Ford Mustang
- 2019 Ford Mustang
- 2020 Ford Mustang
- 2021 Ford Mustang
- 2022 Ford Mustang
- 2023 Ford Mustang
- 2024 Ford Mustang
- 2025 Ford Mustang
- 2026 Ford Mustang
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