If you're looking to enhance your Subaru BRZ or Scion FR-S from 2013 to 2018, the Go Fast Bits Lightweight Pulley Kit (Part Number: 2221) might just be what you need. Crafted from a single piece of 6061-T6 aluminum alloy, each pulley is precision CNC machined to ensure a perfect fit and finish. After machining, the pulleys are anodized in a sleek black, not only giving them a stealthy look but also providing superior wear resistance.
This kit includes three pulleys, which collectively save 2.2 kg of weight. Interestingly, while the weight savings are significant, the reduction in rotating inertia is even more impressive—an 83% decrease. This means that the engine can rev more freely, giving you a noticeable improvement in performance.
Many users have shared their experiences after installing the 2221 kit. One customer mentioned, "I was surprised by how much more responsive my BRZ became. It's like a whole new car!" Another noted, "The installation was straightforward, and the difference in performance was noticeable right away. Highly recommend it!"
Weight savings: 2.2 kg
Rotating inertia reduction: 83%
Other Part Numbers:
Go Fast Bits #gfb2221
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
2013-2016 Scion FRS |
FRS | 2013-2016 |
|
2013-2020 Subaru BRZ |
BRZ | 2013-2020 |
|
2017-2020 Toyota GT-86 |
GT-86 | 2017-2020 |

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.