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Product Information

This listing covers the exact Roush coilovers configuration identified as Ford Mustang Roush 5.0L Single Adjustable Coil Over Kit (Excl. MagneRide Suspension).

Catalog fitment covers the listed 2015-2023 Ford Mustang applications. Exact year and submodel combinations appear in the fitment table below; compatibility must not be inferred for every trim across the full range.

Dramatically improve your Mustang's handling and appearance with ROUSH Coilovers. Our Single Adjustable Suspension Kit combines a set of performance struts and shocks, tuned for a perfect balance of control and comfort, with height adjustable performance springs. This kit will lower your Mustang 1.5 inches in the front and 1.0 in the rear with plenty of room for additional adjustment. Easily tailor the stance of your ride, or adjust corner weights for optimum balance. Rated for over 1.0g lateral acceleration, this kit is perfect for track days, autocross or a spirited drive down your favorite back road. ROUSH Suspension Kits are engineered and tested to achieve proper balance with whole vehicle as an integrated system and will take your Mustang to the next level.

Use manufacturer part number 421839 to identify this exact Roush configuration. Match the full part number, vehicle application, position, dimensions, material, finish, and included components before ordering.

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Buying parts for your Mustang or F-150 should not feel like homework. Too many stores bury you in a giant catalog, slap the same distributor description on every product, and leave you guessing whether it even fits.


We do it the other way. We carry the brands you already trust, we tell you what a part actually does, and we give you the truth about the tradeoffs before you spend a dollar. Drone on that exhaust. Ride quality on those springs. Whether you need a tune. The stuff the big catalogs leave out.

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