FFP · AUTHORIZED DEALER
The leader in Ford performance · Over 35 years · MAP pricing
SHOP ALL STEEDA →
AUTHORIZED DEALER
2015-2023 Ford Mustang – Steeda Hardware kit for 555-4443 kit
- Engineered and manufactured in Valdosta, Georgia
- CNC-machined billet construction where applicable
- Tested on Steeda's SCCA Majors race program
- Steeda authorized dealer — exact MAP pricing
Limited Lifetime Warranty
Backed by Steeda — FFP is an authorized Steeda dealer and warranty claims are honored direct.
Authorized Steeda Autosports dealer. MAP pricing — the same price as steeda.com. Expert install available at our Thousand Oaks, CA shop. Questions on fitment or setup? Chat with Senna or call our specialists.
The full breakdown.
Overview
Steeda was the first company to introduce S550 Diff bushing Inserts all the way back in early 2015. Not only was this kit designed to completely fit around the stock bushing cutouts, but they came in two different durometers, 80 and 90 durometer. It’s been common practice to ‘share’ the extra bushings, the ones not used, with a friend. So Steeda came out with a hardware kit designed just for that. This kit contains all of the hardware needed to use your buddy’s extra bushings on your Mustangs.
Key Benefits
Specifications
Fitment
2015-2023 Ford Mustang GT350/GT500/Bullitt/GT/EcoBoost.
Steeda has been engineering and manufacturing Ford performance parts in-house in Valdosta, Georgia for over 35 years — proven on their own SCCA Majors race team and trusted by enthusiasts who live and breathe Ford. CNC-machined billet construction, proprietary CAD-driven suspension geometry, and a relentless focus on the platforms they specialize in.
QS-9000 & ISO 9001 manufacturing · Limited lifetime warranty on Steeda-manufactured parts · Made in the USA
FFP fits Steeda parts every week in Thousand Oaks.
— Why we stock Steeda
OE-style engineering, in-house manufacturing, race-proven on Steeda's own SCCA program.
Steeda has been engineering Mustang — and now Explorer, Focus, F-150, and Maverick — parts in Valdosta, Georgia since 1988. CNC-machined billet, proprietary CAD-driven suspension geometry, and a factory SCCA Majors road-racing team that runs their own parts on the track every weekend. When you bolt a Steeda part onto your car, it's the same part Steeda's own race cars run.
We carry Steeda because the fitment is right the first time, the warranty is real (lifetime on Steeda-manufactured parts), and the install instructions don't leave you guessing. Drop the car at our Thousand Oaks shop and our techs handle the fit-up — or order with confidence and run it yourself.
Authority: Charles Siritho · McLaren Artura Trophy owner · Spotter for Branden Sorensen FD Pro (E46 LS+Whipple, 6th at Long Beach R1 2026) · 10+ yrs Mustang & Corvette specialist
Other Steeda parts for your build.
2015-2026 Ford Mustang – Steeda 'Stop the Hop' Street Starter Kit
2015-2026 Ford Mustang – Steeda Subframe Alignment and Support Kit
![2015-2023 Ford Mustang – Steeda [Open Box] Steeda Rear Adjustable Camber Arms](https://ffperformance.co/wp-content/uploads/2026/05/555-4123-1__92189.1683201112-800x533.jpg)
2015-2023 Ford Mustang – Steeda [Open Box] Steeda Rear Adjustable Camber Arms
2015-2023 Ford Mustang GT/EcoBoost – Steeda Race Differential Bushing Insert System - Aluminum
2015-2023 Ford Mustang – Steeda Bumpsteer Kit
2015-2023 Ford Mustang – Steeda Front Control Arms (Lateral and Tension Links w/…
Shop the full Steeda catalog at FFP.
The leader in Ford performance — suspension, intakes, exhaust, brakes, wheels, and more — for Mustang, Bronco, Bronco Sport, Explorer, F-150, and Maverick. Enthusiast-driven, race-tested. MAP pricing always. Expert installation in Thousand Oaks, CA.
