Allstar Performance Semi-Solid Shock Shim - 1/16 in Thick - Gray - 16 mm Shocks - Set of 10 Pyrometer Extension Module Splined coupler sold separately #SWE801-70008

Splined coupler sold separately #SWE801-70008

Your S550 needs to perform

5 in OD Tubing

GM 700R4 / 4L60E

150 in Diameter

Allstar Performance Semi-Solid Shock Shim - 1/16 in Thick - Gray - 16 mm Shocks - Set of 10 Pyrometer Extension Module Splined coupler sold separately #SWE801-70008Designed for quick removal, providing a secure installation that will not fall out yet requires 3 4" of space to install or remove. Typically installed when the vehicle is off the ground. Commonly used for fine tuning the suspension. Specialty items for the Shop, Trailer and Track. The Allstar Performance brand offers thousands of hard to find, specialty items that cover many segments in the performance aftermarket. For over 30 years, customers