The Allstar Performance ALL56248 is a GM trailing arm bushing built with an interchangeable polyurethane insert. It ships with a 50 durometer insert installed, and the insert can be swapped for a 60 durometer (ALL99401) or 80 durometer (ALL99402) insert to increase or decrease rear steer for traction tuning. The bushing works with stock or adjustable trailing arms.
Allstar Performance Spec Sheet (PDF)
Compatibility
Fits most 1965-88 Chevrolet Chevelle/Malibu, Buick Skylark/GS, Oldsmobile Cutlass/4-4-2, and Pontiac LeMans/GTO trailing arm applications, per Allstar Performance.
FAQ
What durometer insert ships with the ALL56248?
The ALL56248 ships with a 50 durometer polyurethane insert installed.
Can the insert in the ALL56248 be swapped?
Yes, the insert is interchangeable. Allstar Performance offers the ALL99401 (60 durometer) and ALL99402 (80 durometer) as replacement inserts to increase or decrease rear steer.
What vehicles does the ALL56248 fit?
Allstar Performance lists this bushing as fitting most 1965-88 Chevrolet Chevelle/Malibu, Buick Skylark/GS, Oldsmobile Cutlass/4-4-2, and Pontiac LeMans/GTO.
Does the ALL56248 work with adjustable trailing arms?
Yes, Allstar Performance states the ALL56248 can be used with stock or adjustable trailing arms.

