Cobb 6-Speed Weighted Shift Knob — Black — Subaru 6MT
The Cobb 6-Speed Weighted Shift Knob in Black is a direct-thread replacement for the factory 6MT shift knob on Subaru 6-speed manual applications. At 825 grams, the weighted knob provides settled inertia between gear changes and reduces perceived shifting effort. Includes both Race Red and Stealth Black collar rings for color flexibility.
DETAILS
- THIS LISTING: Weighted Shift Knob — Black
- Platform: 2004-2021 Subaru STI 6MT, 2015-2026 WRX 6MT, 2007-2009 Legacy GT spec.B 6MT
- Weight: 825g — significantly heavier than factory knob
- Height: standard configuration
- Includes: both Race Red AND Stealth Black collar rings
- Material: machined aluminum core, Delrin outer shell
- Direct thread-on — fits factory and Cobb short throw shifter shafts
825g Weighted Core and Dual-Collar Color Flexibility
The Cobb Weighted Shift Knob uses additional mass — approximately 825 grams — compared to a standard factory or Delrin knob. The weight is distributed through a machined aluminum core with a Delrin outer shell. The extra mass provides two practical benefits: first, it reduces the perceived effort of each gear change by providing inertia that carries the lever through the shift gate; second, it keeps the lever settled between gear changes rather than vibrating or drifting with engine and road inputs. On a turbocharged Subaru with the engine’s characteristic vibrations, a weighted knob feels noticeably more planted and intentional than a lightweight one.
Standard Height and Subaru 6MT Thread Compatibility
The Cobb Weighted Knob is available in short and tall configurations. The short version sits at a similar height to the factory knob — the mass is concentrated lower on the lever. The tall version raises the knob position on the shaft, changing the shift lever mechanics: a longer moment arm requires slightly less force to move the lever, and the different hand position changes the ergonomics of the shift motion. Both configurations deliver the same 825g weight. Thread engagement is correct for Subaru and compatible manual transmission applications — the knob threads directly onto the factory or Cobb short throw shifter shaft without adapters. Includes both Race Red and Stealth Black collar rings — swap to match your preferred accent color.
What’s in the Box
- Cobb Weighted Shift Knob — Black
- Race Red collar ring
- Stealth Black collar ring
- Thread-on hardware
Why Choose Cobb Tuning
Cobb Tuning has been developing performance software and hardware for turbocharged enthusiast vehicles since 1999. Founded in Austin, Texas, Cobb built its reputation on the Accessport and expanded into a full catalog of hardware engineered to complement it. Every OTS map is developed in-house on real vehicles, and every hardware product is validated as part of a complete system — not sourced and sold in isolation. That integrated approach is why Cobb produces consistent, reliable results across the builds we see every day.
The RallySport Take
The Cobb Weighted Knob in Black transforms every gear change on the Subaru 6MT. The 825g weight provides inertia that carries the lever through the gate with a more decisive, settled feel than a lightweight knob. Including both collar colors means no guesswork — swap the collar to match the interior at any time.
Fitment
| Year | Make | Model | Notes |
|---|---|---|---|
| 2004-2021 | Subaru | WRX STI | EJ207/EJ257 6MT |
| 2015-2026 | Subaru | WRX | FA20DIT/FA24WGT 6MT |
| 2007-2009 | Subaru | Legacy GT spec.B | EJ257 6MT |
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