GrimmSpeed Lightweight Crank Pulley Blue Subaru 2002-2014 WRX / 2004-2019 STI

The OEM Subaru crank pulley has been a cause for concern ever since its original design. It is extremely heavy, susceptible to catastrophic failure, and won't help you win any awards for appearance. Enjoy a free revving motor due to a reduction of 3.5lbs of rotational mass while not worrying about reliability. GrimmSpeed really pulled out all of the stops for this Lightweight Crank Pulley. CNC machined from 6061 T6 Aluminum and anodized in a finish of your choice, this pulley makes no compromise. A timing mark and a perfectly cut keyway makes installation a breeze. This pulley was designed with the optimum weight for performance while avoiding misfire CEL's and engine hesitation. Achieving balance between performance and design while not sacrificing either is what you can expect from GrimmSpeed!                                                 

• Decreases rotational mass more than 3.5lbs over OEM (You will see much faster revs as a result)
• Factory Fit for clean install
• Optimum weight to avoid misfire CELs or hesitation

Important:

Based on GrimmSpeed's analysis, the OEM crank pulley does not act as a harmonic damper found on for example traditional V8 engine dampers. The elastomer portion of the pulley helps dampen some noise from the engine accessories (ie. alternator, PS pump, and A/C compressor) but in our experience, the increase in this noise is in-perceivable.

Options - Explanation of Parts

Gates OEM A/C Belts-This is a replacement A/C Belt for your vehicle.

Gates 08+ Impreza Stretch Belt Kit 

In 2008, Subaru did away with the A/C Belt Tensioner and instead went with a stretch belt. In order to install/remove this Subaru A/C Belt you need the Stretch Belt Kit for all 2008+ Imprezas.

GrimmSpeed Pulley Removal/Install Tool 

This unique tool allows you to hold the pulley in place while you are trying to loosen/tighten the center crankshaft bolt. Another great feature is that it will work with both OEM Pulleys AND the GrimmSpeed Pulley. This is truly a first of its kind tool that is great to have in your toolbox.

GrimmSpeed/Gates Stretch Kit Adapter 

Unique adapter that allows you to use the Gates Stretch Belt Kit for the 2008+ Impreza with the GrimmSpeed Pulley. Other manufacturers tell you to use the Gates kit on the 2008+ Imprezas but they fail to mention that the Gates Kit will not work on their pulley. We've solved this problem for our pulley.

Gates OEM A/C Belts - This is a replacement A/C Belt for your vehicle.