Unlock freer revving performance for your 2019-2021 Subaru WRX with the GrimmSpeed FA20 Lightweight Crank Pulley Hub. Designed to replace the restrictive one-piece OEM hub, this upgrade allows you to install GrimmSpeed lightweight crank pulleys easily, reducing rotating mass and enhancing engine response. Perfect for Subaru enthusiasts seeking reliable performance gains without compromising oil pump safety.

Crafted from durable A311 steel alloy and zinc plated for corrosion resistance, this hub features a laser-etched GrimmSpeed logo for authenticity. It includes a high-quality Buna-N O-ring to ensure a secure, leak-free fit. The plug-and-play design guarantees straightforward installation, maintaining OEM functionality while improving your FA engine’s throttle response.

Ideal for 2019-21 WRX owners wanting a premium, Subaru-specific drivetrain upgrade, this crank pulley hub supports safe, efficient operation with performance benefits. Upgrade your Subaru’s rotating assembly today and experience smoother, quicker revs. Shop this essential part at Subimods for trusted quality and expert support.