GrimmSpeed Shifter Bushing Kit 6-Speed - 2004-2021 STI

ighten Up Every Shift

If your STI’s shifter feels loose or vague between gears, worn factory bushings are often the culprit. The GrimmSpeed 6-Speed STI Shifter Bushing Kit replaces the soft OEM rubber bushings with durable polyurethane components designed to tighten up the entire shifter assembly.

Over time, factory rubber bushings compress and degrade, allowing unwanted movement in the shifter linkage. This results in excess play and less precise gear engagement. By replacing these worn components with higher durometer polyurethane bushings, this kit dramatically reduces shifter slop and restores the crisp, mechanical feel your STI should have.

The GrimmSpeed kit includes both front and rear shifter bushings, so the entire assembly benefits from improved stability. The front bushings feature a firmer 90A durometer polyurethane compound to improve rigidity and reduce flex, while the rear bushing utilizes an 80A compound that balances firmness with everyday drivability.

To ensure durability and long service life, the bushings feature precision machined 304 stainless steel inserts that help distribute load while resisting corrosion. Zinc coated hardware is included for a reliable installation and long-term performance.

The GrimmSpeed 6-Speed STI Shifter Bushing Kit offers a simple and effective way to eliminate unwanted shifter play and bring precision back to your driving experience.

Quick Specs

• Replaces worn factory rubber shifter bushings that cause sloppy shifting
• Reduces unwanted shifter play for more precise gear engagement
• Front shifter bushings constructed from 90A durometer polyurethane for improved rigidity
• Rear shifter bushing constructed from 80A durometer polyurethane for balanced performance 
• Precision machined 304 stainless steel inserts for load distribution and corrosion resistance
• Zinc coated steel hardware for durability and long-term reliability
• Constructed from polyurethane, 304 stainless steel, and zinc coated steel components
• Direct factory replacement with no modifications required

Fitment

2004 – 2021 Subaru STI equipped with 6-speed manual transmission

What’s Included

• 1x Rear shifter bushing 
• 2x Rear bushing sleeves 
• 2x Front shifter bushings 
• 1x Front bushing sleeve 
• 2x M8 x 1.25 x 35mm flanged bolts 

INSTALL GUIDE