
GFB 4001 Short Shift Kit

Lightened underdrive pulley kit (3 pulleys and belts included)
Short Shift Kit- 6 Speed
$385.00 Original price was: $385.00.$346.50Current price is: $346.50.
🔧 GFB Short Shift Kit – 6 Speed (4002-1)
Shorter Throws. Faster Shifts. Total Driver Control.
Upgrade your driving experience with the GFB 6-Speed Short Shift Kit, designed specifically for late-model Subaru WRX STI gearboxes (MY02 and onwards). Engineered by Go Fast Bits, this kit delivers dramatically reduced shift throw and a tighter, more precise gear change—without complex modifications.
⚙️ KEY FEATURES
- Suits Subaru 6-speed STI gearboxes (MY02+)
- Unique linkage clamp system for greater throw reduction
- 3 adjustable settings for customised shift feel
- No need to raise gearbox linkage or modify surrounding components
- Includes special tool for reverse lock-out cable removal
- Full installation completed from inside the vehicle
🚀 PERFORMANCE BENEFITS
⚡ Up to 45% Reduction in Shift Throw
Reduce factory throw from 40mm down to as little as 22mm per gate.
🏎️ Faster, More Precise Gear Changes
Shorter movement = quicker shifts and improved driving engagement.
🎯 Customisable Feel
Choose between three settings to suit street or performance driving.
🔧 Simple Installation
No cutting, no fabrication—install in around 20 minutes.
🔬 ENGINEERING ADVANTAGE
Unlike traditional short shifters that only replace the gearstick, the GFB system uses a clever clamp mechanism on the linkage, allowing:
- Greater throw reduction than typical aftermarket kits
- No compromise in shift geometry
- No need to reposition or modify linkage height
👉 Most competitors max out at ~30mm per gate
👉 GFB achieves down to 22mm per gate
🔩 SPECIFICATIONS
- Product Type: Short Shift Kit (6-Speed)
- Part Number: 4002-1
- Adjustment: 3 positions
- Factory Throw: ~40mm per gate
- Minimum Throw: ~22mm per gate
- Installation Time: ~20 minutes
- Installation Location: Inside vehicle
🚗 VEHICLE APPLICATIONS
- Subaru WRX STI MY02 (Bugeye)
- Subaru WRX STI MY03–07
- Subaru WRX STI MY08–13
- Subaru WRX STI 2014-on (EJ25)
🏁 PERFECT FOR
- Performance-focused street builds
- Track and motorsport applications
- Drivers wanting tighter, more mechanical shift feel
- STI owners upgrading from factory shifter
💡 WHY CHOOSE GFB SHORT SHIFT?
Because replacing just the gearstick isn’t enough. GFB’s linkage-based design delivers a bigger reduction, better feel, and zero compromise—exactly how a performance shifter should be.
| Weight | 0.8 kg |
|---|---|
| Dimensions | 6.3 × 6.3 × 27.5 cm |
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