The Kartboy Rear Subframe Lock Kit is designed to eliminate unwanted movement in the WRX’s rear subframe during aggressive driving. Under hard cornering, the subframe can shift slightly, altering alignment settings in real-time and impacting handling precision. This kit helps lock the subframe in place, ensuring consistent suspension geometry when it matters most.
This is one of the easiest performance mods you can install — no drilling, cutting, or alignment changes required. Just bolt it in and go.
What’s Included:
• (2) Bolts
• (2) Sleeves
• (2) Washers
Key Features:
• Locks rear subframe to reduce unwanted movement
• Helps maintain alignment under lateral load
• Simple, bolt-in installation using basic hand tools
• Noticeable improvement in rear-end stability and response
