Go Fast Bits Underdrive Pulley Kit - 2004-2007 Subaru WRX / 2004-2007 STI
Go Fast Bits Underdrive Pulley Kit - 2004-2007 Subaru WRX / 2004-2007 STI
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GFB2010
Go Fast Bits
Go Fast Bits Underdrive Pulley Kit - 2004-2007 Subaru WRX / 2004-2007 STI
Go Fast Bits Underdrive Pulley Kit - 2004-2007 Subaru WRX / 2004-2007 STI
Couldn't load pickup availability
HIGHLIGHTS:
- Includes lighter crank, power steering, and alternator pullies
- Improves the engine response by removing rotational mass
- Nice black finish to improve the engine bay aesthetics
Go Fast Bits Underdrive Pulley Kit
SPECS:
- Includes crank pulley
- Includes power steering pulley
- Includes alternator pulley
- Made using lightweight aluminum materials
- Anodized black finish
- Improves engine response
- Increases faster revs
- AC compressor will still operate at normal speeds
- Includes new belts
IMPROVE THE ENGINE RESPONSE WITH LIGHTER PULLIES
The Go Fast Bits Underdrive Pulley Kit is a lightweight set of underdrive pullies that have been designed to help remove some rotational mass from your engine to improve the overall performance. The result is improved engine response, faster revs, along with improved power and performance.

| Specification | Value |
|---|---|
| Color | Black |
| Location | Crank, Alternator And Power Steering |
| Material | Aluminum |
| Pulley Ratio | Underdrive |
| Weight | Multiple |
| Belts Included | Yes |
I bought these last week and put them on yesterday. For one, the weight of these is SIGNIFICANTLY lighter. Two, the response in accelleration is improved, especially in 1st-3rd. Quite happy with those pulled.
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