GrimmSpeed Short Shifter and Swap-Top Weighted Shift Knob Kit - Bulb Bundle

GrimmSpeed STI Short Throw Shifter + Swap-Top Weighted Shift Knob (Bulb) Bundle (2004–2021 STI)

This bundle is all about precision with refinement. Combining the GrimmSpeed STI Short Throw Shifter with the GrimmSpeed Swap-Top Weighted Shift Knob (Bulb), you get a tighter shift pattern paired with a solid, substantial feel in your hand. The result is a gear change that feels deliberate and confident without becoming harsh or tiring during daily driving.

Why this bundle works

• Short, mechanical gear changes:
  The GrimmSpeed STI Short Throw Shifter is a true bolt-in redesign that reduces throw (adjustable 0%–26.3%) and sharpens engagement. Instead of long, rubbery movements, each shift becomes clean and defined.
• Weight that smooths every shift:
  The weighted bulb knob adds mass to the top of the shifter, helping carry the shift through the gate. This makes engagement feel smoother and more controlled, especially during quick shifts or spirited driving.
• Precision that lasts:
  Sealed Enduro MAX ball bearings support heavy pivot loads and keep shifts accurate over time while resisting dirt, wear, and contamination.
• Ergonomics you can tailor:
  The shifter allows adjustable knob height (+0.3” to −1.0” vs stock), while the bulb shape naturally fits both overhand and side-grip shifting styles for comfortable daily use.
• Customizable feel and look:
  The Swap-Top knob design lets you change the top insert without replacing the entire knob, allowing you to refresh the interior appearance while keeping the same weighted feel you like.

OEM-friendly install and fitment

This setup installs cleanly with no console trimming required, maintains OEM reverse lockout compatibility, and keeps the neutral position close to stock even at aggressive throw reduction settings. It retains factory functionality while dramatically improving driver connection.

Fitment: 2004–2021 Subaru STI (6-speed)

Shift knob thread: M12x1.25 (also compatible with many Subaru 5- and 6-speed applications)