The GFB Lightweight Engine Pulley Kit is engineered for the Subaru WRX models from 1994 to 1998, utilizing aircraft-grade 6061-T6 aluminum to achieve significant weight reduction on the crankshaft. This reduction in weight allows for quicker acceleration and a more responsive engine feel.
This pulley kit is designed to improve acceleration by decreasing the rotational mass (inertia) on the crankshaft while also minimizing parasitic loads from driven accessories. The effect is akin to that of a lighter flywheel, enhancing throttle response and engine revs.
GFB has meticulously optimized the underdrive ratios to ensure that there are no adverse effects on accessory performance. Concerns regarding harmonic issues associated with lightweight pulleys are addressed; this kit is application-tested to guarantee it will not cause engine damage, either in the short or long term.
This kit is compatible with the Subaru Impreza models from 1994 to 1998, providing an excellent upgrade for those looking to enhance their vehicle's performance without compromising reliability.
Other Part Numbers:
Go Fast Bits #gfb2003
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
1994-1998 Subaru Impreza |
Impreza | 1994-1998 |

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