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Bring back that crisp, mechanical shift feel your WRX had when it was new. The Kartboy Short Shifter and Bushing Combo is the go-to fix for sloppy, vague shifts caused by worn-out factory bushings and excessive throw.
This setup includes a CNC-machined short shifter that reduces throw by up to 40%, along with front and rear bushings made from high-durometer polyurethane to tighten up both front-to-back and side-to-side movement. It’s one of the most noticeable upgrades you can make to your drivetrain without opening up the transmission.
Kit Includes: KB-20-STI, KB-003, KB-003-REAR
| Year Fitments | Subaru STI | |
|---|---|---|
| 2004 | ✓ | |
| 2005 | ✓ | |
| 2006 | ✓ | |
| 2007 | ✓ | |
| 2008 | ✓ | |
| 2009 | ✓ | |
| 2010 | ✓ | |
| 2011 | ✓ | |
| 2012 | ✓ | |
| 2013 | ✓ | |
| 2014 | ✓ | |
| 2015 | ✓ | |
| 2016 | ✓ | |
| 2017 | ✓ | |
| 2018 | ✓ | |
| 2019 | ✓ | |
| 2020 | ✓ | |
| 2021 | ✓ |
WARNING: Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to P65Warnings
| SKU | kbyKB-9000 |
|---|---|
| Manufacturer's Part Number | KB-001-6COMBO, KB-9000 |
| Brand | Kartboy |






