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The factory rubber bushings that mount the S550/S650 rear end to the cradle are great for cutting NVH but do nothing for performance. SPE's Composite Differential Lockout System locks the Super 8.8 rear end to the cradle without the added NVH of a solid billet mount.
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Fitment: 2015-2027 Mustang GT; 2016-2020 Mustang GT350; 2020-2021 Mustang GT500.
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