Take Control. Stay Connected.
If you're serious about power, you better be just as serious about putting it to the ground. Our GrimmSpeed Drivetrain Package brings together three key components designed to tighten up response, reduce slop, and give you the direct feel you've been missing—especially under load. Whether you're launching, shifting hard, or just carving your favorite backroad, this combo gives your Subaru the control and feedback it was always meant to have.
What’s Included
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GrimmSpeed Stage 1 Power Package – This isn't just an intake and tune. It's a calibrated system built to safely increase horsepower and torque while maintaining reliability. Real gains, real drivability.
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GrimmSpeed Street Transmission Mount – Featuring a robust street-spec durometer, this mount drastically reduces drivetrain movement without introducing harsh NVH. It’s daily-drivable stiffness with track-day readiness.
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GrimmSpeed Engine Mounts – Constructed from billet aluminum and high-durometer bushings, these mounts keep your engine locked in place and improve throttle response, shifting precision, and overall feel.
Built for Subaru Enthusiasts
This package fits a wide range of Subaru turbo models from 2002–2021, including the WRX, STI, and other 5MT/6MT configurations. Whether you’re just getting started or reinforcing your build, this setup is a no-brainer for anyone who values sharper shifting and power delivery that doesn’t get lost in flex and float.