GFB 2 Piece Under-Drive Pulley Kit w/ Belts (Crank & Alternator) 2002-2021 WRX/STI Exhaust- Mufflers & Tips>Resonators

GFB 2 Piece Under-Drive Pulley Kit w/ Belts (Crank & Alternator) 2002-2021 WRX/STI Exhaust- Mufflers & Tips>ResonatorsOne of the ways that you can improve the response in your engine is by adding a lightweight pulley set. Lightweight pullies have less rotational mass when compared to OEM pullies and less rotational mass means that you will have improved engine response for a little bump in both power and torque. This is the Go Fast Bits 2 Piece Underdrive Pulley Kit which includes the alternator and crank pullies. These pullies have been crafted from aircraft grade

Retains function of OEM fuel level sender and can hook up to factory fuel lines or aftermarket fuel lines can be used

software tunes

Meticulously designed to cover the full length of the fender from the headlight to the firewall

Alignment Tool Included Yes

Designed to eliminate unwanted flex and provide superior alignment control

engineering and manufacturing the highest quality suspension products

Black Finish

In response to this demand

& Axle-Back exhaust systems feature patented straight-through and multi-core technology to unleash hidden horsepower

These Torque Solution Forged Aluminum Wheel spacers are a great way to achieve a better flush fitment on your vehicle and to get better brake caliper clearance with certain aftermarket wheel designs

corner speed and steering response

O-rings are provided to ensure a leak-free seal for an easy install