Turner Motorsport E46 Top-Side Rear Subframe Reinforcement Brace

The Rear Axle Carrier Panel (RACP) is a well-known weak point in all BMW E46 models. Thin sheet metal construction and high-stress forces during acceleration, braking, and cornering often result in cracks or structural failure of the carrier panel, risking the structural integrity of your chassis. To remedy this issue, many enthusiasts install bottom-side sheet metal reinforcement plates. While these kits are essential for preventing stress cracks around the rear subframe mounting points, they do not address the overall flexibility of the carrier panel under high-performance driving conditions.

Turner Motorsport’s Rear Subframe Reinforcement Brace is the ultimate solution for enthusiasts seeking to eliminate carrier panel flex and prevent further RACP damage. Designed for high-performance driving and track use, this brace adds essential structural rigidity to the rear end of your E46, enhancing both durability and driveability. This brace is constructed from heavy-duty steel tubing and finished with a durable blue powdercoat for corrosion resistance and a striking appearance. During design, Turner's engineers ensured this brace was compatible with their underside Rear Subframe/Chassis Reinforcement Kit (ES#3006359), making it the perfect addition to a comprehensive chassis strengthening strategy.

Don’t let RACP failure and chassis flex limit your E46's performance potential. Upgrade to the Turner Motorsport’s Rear Subframe Reinforcement Brace to fortify your chassis, enhance stability, and unlock superior handling for both road and track use.

PART DESIGN

• The four-point triangulated design ties the rearmost subframe mounting locations to both rear strut towers, reducing chassis flex under extreme forces.
• By restricting downward flex in the RACP during acceleration, torque transfer efficiency is maximized for a more responsive driving experience.
• Just like a rear strut brace, this reinforcement minimizes lateral loads during cornering, ensuring consistent handling.
• Constructed using heavy-duty steel tubing to provide reliable support during spirited driving, track use, and for vehicles with increased power output.
• High-quality "Turner Blue" powdercoat finish delivers excellent corrosion resistance, shields against scuffs and scratches, and adds a sleek, performance-oriented aesthetic to your E46.
• Confirmed functionality with the Turner Motorsport underside RACP reinforcement plates (ES#3006359)—combine these two for the ultimate chassis strengthening solution!

KIT CONTENTS

• Turner Motorsport Rear Subframe Brace
• Turner Motorsport Sedan-Specific Subframe Brace Spacers
• Extended-Length and High-Speed Drill Bits for Easy, Accurate Cuts
• Drill Bit Guide for Trunk Floor Modification
• Extended Subframe Bolts and Zinc-Plated Hardware

INSTALLATION AND SUPPORT

Need installation tips? The team at Turner Motorsport has assembled a guided start-to-finish installation tutorial, including detailed instructions on drilling and cutting your trunk floor panel for perfect fitment. See the Installation PDF under the "INSTALLATION" tab for more information.