Perrin Subframe Lockdown Kit 2002-2007 WRX / 2004-2007 STI

Take full control of your Subaru’s rear end with the PERRIN Subframe & Diff Lockdown Kit. Designed to drastically reduce unwanted drivetrain movement and subframe flex, this kit gives your WRX or STI a more direct, confident feel—especially under hard acceleration, cornering, and shifting.

Crafted from high-quality CNC-machined aluminum and premium urethane bushings, the kit effectively locks down the rear subframe and rear differential to minimize play. This results in improved traction, more predictable handling, and a tighter, sportier driving experience without adding excessive noise or vibration.

Features:

• Reduces Rear-End Slop: Firmly secures the rear subframe and differential for improved power transfer and chassis response.

• Improves Launch and Handling: Reduces wheel hop and helps maintain rear-end stability under load.

• Durable Construction: Anodized aluminum spacers and high-durometer bushings built for performance and longevity.

• Easy Installation: Direct bolt-on design; no permanent modifications required.

Included:

• (4) PERRIN Diff Lockdown Bushings
• (2) PERRIN Large Subframe Bushings
• (2) PERRIN Subframe Bushings
• (2) M12 Hex Head Bolt
• (2) Metal Bolt Sleeves

Installation Instructions