These are SPL's Solid Differential Mount Bushings. SPL designed these particular bushings to eliminate the OEM mushy rubber bushings that hold the rear differential solidly to the rear subframe. The stock bushings are a wear-and-tear item, but the wear will especially accelerate during high-performance driving conditions where the chassis of the A90 will experience more movement and more torque. The SPL units are made using CNC machined 6061-T6 billet aluminum construction to keep that rear differential in place.
SPL Differential Bushing Set
SPECS:
6061-T6 billet aluminum construction
CNC machined for an accurate fitment
Direct replacements for the soft rubber OEM rear diff mount bushings
Includes (2) bushings on the front of the differential pumpkin as well as (1) bushing on the subframe where the rear of the differential mount
Some slight harshness associated with solid bushings may be noticed
Ideal for those of you with daily drivers or high-powered street cars that want an end-all-be-all of rear diff mount bushings
Highly effective for those with purpose-built race cars
