Subframe

Rear Axle Carrier Panel (RACP) failure is a well-documented issue that plagues all BMW E46 models. Due to thin sheet metal mounting, the forces applied during cornering, acceleration, and braking create stress fractures in the carrier panel, resulting in large cracks or breaks that risk the structural integrity of your chassis. To fix this issue, many enthusiasts opt to install weld-in reinforcement plates on the underside of the RACP. While this remedies the formation of additional stress cracks and adds rigidity to failure-prone areas, it does not prevent the entire carrier panel from flexing during high-performance driving.

Our all-new Rear Subframe Reinforcement Brace is engineered to add structure to the E46's rear chassis under high-stress conditions, eliminating the common weak points in the RACP while providing the confidence you need for performance driving. Don't let chassis flex limit your car’s potential—upgrade your E46 with the Turner Motorsport Rear Subframe Reinforcement Brace today!

How It Works:

During performance driving, the Rear Axle Carrier Panel (RACP) must react the forces of longitudinal and lateral accelerations. During forward acceleration, the differential transmits torque through the subframe to the RACP, forcing the rearmost subframe mounting points downward. This downward movement flexes the carrier panel, reducing its ability to handle torque efficiently. By linking the rearmost subframe mounting points to the rear shock towers, downward flex is restricted, resulting in improved torque transfer and stability. Alternatively, high-grip cornering generates lateral acceleration (side-to-side) forces across the RACP. Similar to how a rear strut brace functions, connecting the rear shock towers helps to counteract these forces. Adding the subframe to this connection further reduces lateral loads, eliminating side-to-side flex and enhancing overall stability.

Features & Design:

Four-Point Triangulated Structure: Links the rearmost subframe mounting locations to both rear strut towers for superior load distribution. Enhanced Stability: Reduces lateral and longitudinal RACP flex during acceleration, braking, and cornering. Improved Torque Transfer: Minimizes downward flex of the RACP, ensuring efficient power delivery for enhanced driveability. High-Performance Durability: Heavy-duty steel tube construction ensures lasting support during spirited driving, track use, and for vehicles with increased power output. Blue Powdercoat Finish: Offers fantastic corrosion resistance, protection from scuffs and scratches, and a stylish appearance that is sure to complement your performance-centric E46. Underside Reinforcement Compatibility: Designed to work seamlessly alongside our underside RACP reinforcement plates (TDR4675412, T#91). Kit Includes:

Rear Subframe Brace Sedan Subframe Brace Spacers Extended-Length Drill Bit (1/4", 12" Overall Length) High-Speed Drill Bit (12.5mm, 152mm Overall Length) Drill Bit Guide Extended Subframe Bolts Zinc-Plated Steel Hex Nut (2) Installation & Support:

Need installation tips? Our team has assembled a guided start-to-finish installation tutorial, including detailed instructions on drilling and cutting your trunk floor panel for perfect fitment. Click HERE for Installation Instructions

The Powerflex Rear Subframe Rear Bushing Insert for the BMW E36 3 Series (1990-1998) is an innovative performance enhancement designed to improve the stability and handling of the rear suspension. This insert works in conjunction with the existing rubber bushings, providing significant upgrades in responsiveness and durability.

Key Benefits:

1. Improved Rear Suspension Control: The insert is crafted from high-performance polyurethane, which reduces the amount of flex and movement in the rear subframe. This increased stiffness enhances stability during cornering, resulting in better traction and handling, especially under dynamic driving conditions.

2. Durability and Longevity: Unlike factory rubber bushings, which can wear out and degrade over time due to exposure to heat and road conditions, Powerflex inserts are built to withstand harsh environments. Their robust construction ensures that they maintain performance levels longer, providing reliable support to the subframe.

3. Enhanced Handling Characteristics: By minimizing unwanted movement, these inserts help to optimize the alignment of the rear suspension components. This leads to improved handling response and cornering capabilities, giving drivers more confidence and control during spirited driving.

4. Simple Installation Process: Specifically designed for the E36 3 Series, these inserts fit directly into the original subframe bushings without any need for modification. The installation is straightforward, making it an accessible upgrade for DIY enthusiasts and professionals alike.

5. Versatile Application: Whether for daily driving, track use, or spirited weekend rides, these inserts are suitable for various driving styles. They enhance the overall performance of the rear suspension, making them a great addition for both casual drivers and performance enthusiasts.

This upgrade is ideal for BMW E36 3 Series owners seeking to elevate their vehicle's rear suspension performance and responsiveness. The Powerflex Rear Subframe Rear Bushing Insert offers a reliable solution for improving handling, stability, and overall driving enjoyment, making it an excellent choice for enhancing the driving experience.

The Powerflex Rear Subframe Front Bushing Insert for the BMW E36 3 Series (1990-1998) is an essential performance upgrade designed to improve the rigidity and responsiveness of the rear suspension. This insert fits directly into the factory rubber bushings, providing enhanced handling and stability for a more enjoyable driving experience.

Key Benefits:

1. Increased Structural Rigidity: Made from high-quality polyurethane, the bushing insert significantly reduces flex in the rear subframe. This increased rigidity enhances stability during cornering and aggressive driving, resulting in improved traction and control.

2. Longevity and Durability: Unlike traditional rubber bushings that can wear out and degrade over time, Powerflex inserts are built to withstand harsh driving conditions. They resist deterioration from heat, oil, and road debris, ensuring consistent performance and durability over the life of the vehicle.

3. Enhanced Handling Performance: By minimizing unwanted movement in the rear suspension, these inserts optimize alignment and handling characteristics. This leads to more precise steering response and better cornering capabilities, providing drivers with a more connected and confident driving experience.

4. Direct Fit for Easy Installation: Specifically designed for the E36 3 Series, these inserts are engineered for a straightforward installation process. They fit directly into the existing front subframe bushings, requiring no modifications, making it an ideal upgrade for both DIY enthusiasts and professional mechanics.

5. Versatile Usage: Whether for daily driving, spirited weekend jaunts, or track applications, these inserts improve the overall performance of the rear suspension system. They help maintain tire contact with the road, enhancing grip and stability under various driving conditions.

This upgrade is perfect for BMW E36 3 Series owners looking to enhance their vehicle's rear suspension performance. The Powerflex Rear Subframe Front Bushing Insert offers a reliable solution for improving handling, stability, and overall driving enjoyment, making it a valuable addition for enthusiasts seeking a more engaging driving experience.