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This Go Fast Bits pulleys - crank, underdrive is built for the 2013-2016 Scion FR-S and the other applications listed in the fitment table. Part number GFB2223 identifies the exact configuration, so confirm the vehicle, factory turbo or mating component, connection style, and required supporting parts before ordering.
Key Features
- It might be hard to imagine how reducing the mass of a pulley makes a car go faster, but accelerating a heavy factory pulley from say 3000-7000 RPM in a second or two saps a measurable amount of torque.
- GFB Lightweight Pulleys reduce inertia by up to 85 percent, so most of the torque that used to accelerate the pulley can now be applied to the wheels.
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 2013-2016 | Scion | FR-S | Confirm factory turbo and connection configuration |
| 2013-2020 | Subaru | BRZ | Confirm factory turbo and connection configuration |
| 2017-2020 | Toyota | 86 | Confirm factory turbo and connection configuration |
Specifications
| Brand | Go Fast Bits |
|---|---|
| Manufacturer Part Number | GFB2223 |
| Product Type | Pulleys - Crank, Underdrive |
| Fitment Type | Vehicle Specific |
| Condition | New |
What's Included
One new Go Fast Bits pulleys - crank, underdrive identified by part number GFB2223, with only the hardware and accessories supplied by GFB for this exact configuration. Tools, fluids, tuning, and unlisted supporting parts are not included.
About Go Fast Bits
Go Fast Bits develops turbo-system controls and performance hardware in Australia. Its range includes diverter and blow-off valves, boost controllers, wastegate components, pulleys, and application-specific installation hardware.
Related Go Fast Bits Products
- Shop all Go Fast Bits products
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Frequently Asked Questions
Will this pulleys - crank, underdrive fit my application?
Use the fitment table for the confirmed applications and match part number GFB2223 to the factory turbo, flange, and control system. Engine or trim names are not substitutes for a year, make, and model match.
What should I verify before installation?
Confirm the part number, mating component, dimensions, hose or electrical connections, required tools, and all supplied hardware before removing factory parts.
Is professional installation recommended?
Yes when the work affects boost control, fuel pressure, engine timing, or safety-critical hardware. The completed installation must be checked for leaks, clearance, secure routing, and correct operation.
Installation Instructions
Follow the current GFB instructions for the exact part number. Work on a cool vehicle, verify every supplied component, record the original hose and electrical routing, and test-fit the part before final tightening. After installation, inspect for air, vacuum, boost, fuel, or exhaust leaks as applicable, confirm safe clearance from heat and moving parts, then verify correct operation before normal driving.
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