GrimmSpeed STI Short Throw Shifter + Swap-Top Weighted Shift Knob (Piston) Bundle (2004–2021 STI)
If you want your STI to feel more purposeful every time you grab a gear, this bundle delivers. Pairing the GrimmSpeed STI Short Throw Shifter with the GrimmSpeed Swap-Top Weighted Shift Knob (Piston) creates a shift action that is tighter, more controlled, and noticeably more mechanical while still remaining comfortable for everyday driving.
Why this bundle works
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Shorter, more precise shifts:
The GrimmSpeed STI Short Throw Shifter is a true bolt-in redesign that reduces throw (adjustable 0%–26.3%) and sharpens engagement. Each gear change feels defined and deliberate instead of long and vague. -
Weighted control through the gate:
The weighted piston-style knob adds mass to the shifter, helping guide the lever into gear. The additional inertia smooths engagement and makes quick shifts easier and more consistent, especially during spirited driving. -
Durable precision components:
Sealed Enduro MAX ball bearings are built for heavy pivot loads and help maintain consistent shift feel while resisting wear, dirt, and contamination over time. -
Ergonomic performance feel:
The piston shape provides a natural palm grip that works especially well for overhand shifting, while the adjustable knob height (+0.3” to −1.0” vs stock) lets you fine-tune the shifter position to your driving style. -
Customizable interior appearance:
The Swap-Top design allows the top insert to be changed without replacing the entire knob, letting you personalize the cabin while keeping the same weighted feel.
OEM-friendly install and fitment
This bundle installs cleanly with no console trimming required, retains OEM reverse lockout compatibility, and keeps the neutral position close to stock even at aggressive throw settings. It functions like a factory component while dramatically improving the driving experience.
Fitment: 2004–2021 Subaru STI (6-speed)
Shift knob thread: M12x1.25 (also compatible with many Subaru 5- and 6-speed Subaru applications)