Kartboy 2004 - 2021 Subaru STi Short Shifter & Bushing Combo

KB-9000

This short shifter upgrade reduces overall shift throw by 40%, delivering a sharper, more precise feel every time you change gears. The shift knob height is also lowered by 1 inch, creating a sportier and more ergonomic driving position. Precision-built from CNC-machined and TIG-welded 4130 chromoly steel, this shifter is engineered for strength and durability. Installation is quick and straightforward, requiring only basic hand tools and taking under 30 minutes.

The Kartboy Shifter Bushings replace the stock shifter mount bushings, eliminating unwanted flex for a crisper, more direct gear change. While they won’t alter the shifter’s geometry, they remove the excess play found in the factory setup, making the shifter feel up to 10x more solid. Constructed from durable grey polyurethane specifically for the STI, these bushings are installed underneath the vehicle and require the car to be safely supported on jack stands. Installation time is approximately 30 minutes.

Designed to work alongside the main shifter bushings, the Kartboy Rear Shifter Bushing replaces the soft factory rubber unit to further stabilize the shifter assembly’s mounting base. Located in the transmission tunnel above the driveline, this bushing helps ensure every shift feels tight, consistent, and confidence-inspiring.

The Kartboy Bushings are Hand Made in USA and are 100% Guaranteed.

Includes:

• KB-20-STI
• KB-003-STI 
• KB-003-REAR