The GFB 4003 Short Shifter Upgrade Kit is designed to transform the 4003 model into the 4002, enhancing the shifting experience by reducing throw distance for quicker gear changes. This kit is engineered for precision, making it an excellent choice for those looking to improve their driving dynamics.
The GFB 4003 kit includes high-quality components crafted from durable materials to ensure longevity and reliability. The precise engineering involved in the manufacturing process guarantees a direct fit, allowing for a straightforward installation without the need for extensive modifications.
Installation of the GFB 4003 Short Shifter Upgrade Kit is straightforward, typically requiring basic hand tools. It is advisable to consult the vehicle's service manual for specific instructions to ensure proper fitment and function.
By reducing the shifter throw, this upgrade enhances the overall driving experience, providing a more engaging connection between the driver and the vehicle. This is particularly beneficial for spirited driving or track use, where quick gear changes can significantly improve lap times.
Other Part Numbers:
Go Fast Bits #gfb4202
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
2004-2005, 2008-2014 Subaru Impreza |
Impreza | 2004-2005, 2008-2014 |
|
2004-2020 Subaru STI |
STI | 2004-2020 |
|
2006-2007 Subaru WRX |
WRX | 2006-2007 |

It all started with the passion of John Adrian to create something that other aftermarket parts cannot produce. Most parts he encountered are either of low quality and are made out of inferior materials.
He decided to take matters into his own hands and started designing, testing, and developing parts that would help improve the performance of his vehicle. Using his own car as a personal testbed, he created products that other enthusiasts later noticed, which has become the start of Go Fast Bits.
Your Source of Performance PartsThe company offers various performance parts such as boost controllers, blow-off valves, short shifters, pulley kits, and more. John Adrian also acts as the chief engineer of the company. Using his 35 years of experience manufacturing high-quality parts for the automotive industry that includes Original Equipment Manufacturers (OEM) parts, he was able to produce parts that meet the demands of his customers.
Quality Made ProductsAll their parts are meticulously made using the highest grade material available to ensure product durability and reliability. Each piece is manufactured to fit perfectly on the vehicle and tested to ensure optimum performance and nothing less.
Purchase Go Fast Bits Parts At Vivid RacingIf you are in the market for high-quality products that would help improve your vehicle's performance, then Go Fast Bits is a brand that you can trust. Their products are proven to deliver performance without compromising the daily drivability of your vehicle. Whether your car is used as a grocery getter or a weekend racer, Go Fast Bits has the right parts for you.
To know more about the company, visit Vivid Racing and check out their parts list that fits your specific requirement.
Click to view the Installation Instructions here