Short Shifter Kit | Subaru STI 6spd (2004-2021)
KB-20-STI
Tired of that sloppy, vague shift feel? The Kartboy Shifter is a direct swap for your factory shifter and delivers a driver-focused, crisp gear change experience. You’ll get up to 40% less shift throw and a 1-inch lower shift knob placement, with instant improvement in precision and ergonomics.
Built from CNC-machined, TIG-welded 4130 Chromoly steel, this upgrade delivers unmatched strength and long-term durability. Installation takes about 30 minutes with basic hand tools, making it an easy upgrade you can tackle in your garage.
There's no better bang-for-your-buck mod than a Kartboy short shifter.
Kit includes shifter arm and replacement shift linkage bushings. Pre-assembled for easy plug and play.
Fitment: Subaru STI 6spd (2004-2021)
Installation Guide
This guide covers installing the Kartboy Short Shifter in a 2004 STI (GD chassis). The shifter install itself is the same for all 2004–2021 STI models, including GD, GR, and VA. The only difference is how the center console comes apart. The VA has a few more fasteners.
Pairs well with
In-stock items ship in 1-2 business days.
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Short Shifter Kit | Subaru STI 6spd (2004-2021)
MADE IN USA
LIFETIME WARRANTY
LIFETIME CUSTOMER SUPPORT
Numbers match the steps — selected parts appear on the assembly
Image is representative of the shift linkage generally — actual shifter shape may differ by transmission.
Build Your Shift Kit
Everything wears together - replace it together. Pick your Subaru, and we'll show you exactly what fits. One install, zero guesswork.
What do you drive?
Shifter system
These install in the same teardown — do it once, do it all.
Each part ships as its own line item.
Built by Die-Hards, Trusted by Legends
For over 25 years, Kartboy has supplied performance drivetrain and suspension components trusted by Subaru owners - from street builds to some of the most capable drivers in the sport.
