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November 21, 2025 1 min read

Face it: your factory diff bushings are marshmallows. They're soft, squishy, and terrible at handling the glorious torque your S550 is laying down. They're the reason your back end does that embarrassing "Twerk" every time you launch (aka wheel hop). Our SPE Billet Differential Lockout System throws those noise-dampening comfort pillows out the window. It bolts your rear end down solidly, allowing for predictable, grippy launches. Sure, you'll see a slight increase in NVH—think of it as the sweet, honest soundtrack of performance, instead of a muffled rubber yawn.

Check it out: https://www.spemotorsport.com/collections/gt500-chassis-components/products/spe-motorsport-s550-billet-differential-bushing-kit

Features and Benefits:
•  Reduced wheel hop
•  Reduced 60 foot times
•  Increased control and predictability 
•  Easy Install
•  Non Permanent Modification


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