PERRIN 93-14 Subaru Impreza (Incl. 02-14 WRX) / 04-21 STI (w/o AC) Lightened Crank Pulley - Red

If you're looking to get a little more zip out of your Subaru's engine, a lightened crank pulley is a popular way to go. This Perrin pulley is designed to replace the heavier stock unit on your 93-14 Impreza, 02-14 WRX, or 04-21 STI (models without AC). By reducing the rotational mass at the crankshaft, the engine can rev up more freely, giving you a noticeable improvement in throttle response and a bit more eagerness when you get on the gas.

Perrin makes these pulleys from well-built aluminum and then anodizes them in a bright red finish. This isn't just about looks, though the red does add a nice touch under the hood. The key is that it's significantly lighter than the factory pulley, which is often cast iron or a much heavier steel. Less weight spinning means the engine doesn't have to work as hard just to speed itself up, and that translates directly into a more responsive feel when you're driving. It's a straightforward swap for a mechanic, typically bolting right up where the old one came off.

While this pulley helps the engine rev faster, it's important to note that it doesn't add horsepower on its own. The gains are in how quickly the engine can reach its existing powerband. If you're looking for a simple modification that makes your Subaru feel a bit more lively, this Perrin lightened crank pulley is a solid option.