Grimmspeed Lightweight Crank Pulley for Subaru WRX 15+ Forester 13+ BRZ 86 FB FA

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  • Regular price $299.95
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FB20 / FB25 / FA20 / FA25

In the opinion of the Grimmspeed team, the OEM Subaru crank pulley has been a cause for concern ever since its original design. It is relatively heavy, prone to catastrophic failure, and quite unsightly. We couldn't continue using it on our cars. Reducing rotational mass while maintaining safety can enhance reliability and result in quicker revs! With our Lightweight Crank Pulley, we spared no effort. It is CNC machined from 6061 T6 Aluminum, leaving no compromises. It weighs 3.5 lbs lighter than the OEM counterpart while increasing durability. The pulley features a timing mark and a perfectly cut keyway, making installation a breeze. We carefully designed the pulley to achieve optimal weight for performance, avoiding misfire CELs and engine hesitation.

At GrimmSpeed, innovation is standard in every product we introduce, and our pulley is no exception. We have developed the only aftermarket pulley installation and removal tool that works with every style of OEM Subaru pulley, as well as our lightweight aftermarket pulley.

Striking a balance between performance and design without compromising on either is what you can expect from GrimmSpeed™.

Red and Blue options available, See our other listings

Important Notice:

After careful analysis, we have determined that the OEM crank pulley does not function as a traditional V8 engine damper, which is designed to reduce harmonic vibrations. While the elastomer component of the pulley does provide some noise dampening for engine accessories such as the alternator, power steering pump, and A/C compressor, our extensive experience has shown that any increase in noise is negligible and barely noticeable.


75% Reduction in Rotating Mass - weighs 1.1lb vs the 4.4lb OEM pulley
Machined 6061 T6 Aluminum - high quality, precision construction
Hard Anodized Finish - ensures a durable finish and resists corrosion
Removal Tool Mounting - allows the use of the GrimmSpeed Crank Pulley Tool
Factory Fitment - direct replacement for easy installation

Vehicle Fitment - FA / FB Motors Only:

2015-18 Subaru WRX (w/1-Piece OEM Pulley, 19+WRX will need an additional OEM backing piece)
2013-2018 Subaru Forester Inc XT (w/1-Piece OEM Pulley)
2011-2016 Subaru Impreza (w/1-Piece OEM Pulley)
2014+ Subaru Levorg (w/1-Piece OEM Pulley)
2012+ Subaru BRZ (w/1-Piece OEM Pulley)
2012+ Toyota 86 (w/1-Piece OEM Pulley)

See hi-res pics for compatibility
What you see is what you are purchasing

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