HKS Carbon Shift Knob Subaru 6Mt
The HKS 51999-AF001 shift knob is a 47 mm carbon fiber sphere for the 6-speed manual Subaru WRX/STI, fitting the 2015-2021 WRX (VAG) and WRX STI (VAF) as well as the 2004-2014 Impreza WRX STI (GD/GRF/GVF), and drops in as a direct upgrade over the factory knob.
Key Features
- Genuine HKS part number 51999-AF001
- Spherical section diameter: 47 mm
- Material: Carbon fiber
- Package dimensions: 55 x 55 x 80 mm
Fitment
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2021 | Subaru | WRX 4D | VAG |
| 2015-2021 | Subaru | WRX STI 4D | VAF |
| 2008-2014 | Subaru | Impreza WRX STI 5D | GRF |
| 2011-2014 | Subaru | Impreza WRX STI 4D | GVF |
| 2004-2007 | Subaru | Impreza WRX STI 4D | GD |
Specifications
| Detail | Value |
|---|---|
| Spherical section diameter | 47 mm |
| Material | Carbon fiber |
| Package dimensions | 55 x 55 x 80 mm |
| Package weight | 0.16 kg |
| Package Dimensions/Weight | 55 x 55 x 80 mm, 0.16 kg |
What’s Included
- Shift pattern sticker
About HKS
HKS is a Japanese performance engineering company founded in 1973, known for turbocharger systems, the Hipermax coilover line, SSQV blow-off valves, and precision-engineered engine, suspension, and exhaust components developed and tested on JDM and global performance platforms.
Related Parts
- HKS 51999-AT002 CARBON SHIFT KNOB
- HKS CARBON SHIFT KNOB ZN6/ZN8
FAQ
What vehicles does this steering wheel/shift knob fit
Check the fitment table for the exact year, make, model, and chassis this part covers before ordering.
Is this a genuine HKS part
Yes, this is a genuine HKS part sourced through authorized HKS distribution channels.
What is included in the box
The What’s Included section above lists the exact contents and quantities that ship with this part.
Does this part require professional installation
Some HKS parts require professional installation, fabrication, or specialized tools. Review the Installation Instructions section for this part before starting the job.
What is the HKS warranty on this part
HKS provides a one year warranty to the original purchaser against defects in materials and workmanship. Purchasing through an unauthorized seller can void this warranty.
Is this part covered for emissions or CARB compliance
Check current emissions regulations in your area before installing this part on an emissions controlled vehicle.
Can I return this part if it does not fit my vehicle
Confirm fitment against the table above before ordering. Standard return policy applies to unused, unmodified parts in original packaging.
Where is this part manufactured
HKS parts are engineered and manufactured under HKS’s Japan based quality standards for performance automotive applications.
Installation Instructions
- Confirm the part in hand is stamped or labeled with HKS part number 51999-AF001 before installing.
- Confirm your vehicle matches the verified fitment listed above for this steering wheel/shift knob.
- Review the HKS installation documentation for this part number before beginning work.
- Use proper tools and safety equipment. Some HKS parts require professional installation.
- Install the part following HKS’s documented procedure for this application.
- Torque all fasteners to manufacturer specification.
- Double-check the installation and test the vehicle in a controlled, safe environment before normal use.
