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Whiteline Rear Subframe Mount Bushing Inserts – 15-21 WRX/STI

Whiteline Rear Subframe Mount Bushing Inserts – 15-21 WRX/STI


Whiteline’s subframe insert bushings work within the voids of the original factory bushing to eliminate over compliance or better known in motorsport as ‘lost motion’ of the rear crossmember.


In stock



Whiteline boasts a worldwide reputation as a leading manufacturer of replacement, enhancement, and performance suspension components that deliver significant gains in vehicle balance, steering precision, grip levels, and outright driving performance.

Whiteline products provide automotive workshops, tuners, enthusiasts, and racers with innovative solutions to suspension and handling problems while delivering proven performance & problem solving outcomes for many of the world’s vehicle platforms.

Quick Specs

  • Inserts into the factory rear subframe mounts
  • Dramatically reduces rear cross member misalignment and movement
  • Allows a more positive feel from the rear end during cornering.


Additional Information

Weight .49 lbs
Dimensions 8 × 7 × 3 in


  • 2015-2021 WRX/STI

Installation Guide

Install Guide

Install Time – 4 Hours

Install Difficulty – Trade Specialist