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Reinforcement Kit

BMW subframe reinforcement kits are essential for preventing structural fatigue and failure in high-stress areas of the chassis, particularly in performance-driven and older BMW models. Over time, repeated stress, aggressive driving, and factory design limitations can lead to subframe cracking, metal fatigue, and mounting point failure, compromising handling and safety. Common issues include rear subframe tearing, misalignment, and excessive flex, which can result in clunking noises, poor suspension response, and potential structural damage. Installing a BMW subframe reinforcement kit strengthens weak points, prevents costly repairs, and enhances chassis rigidity for improved stability and longevity. Our selection of premium BMW subframe reinforcement plates and weld-in kits provides a durable, long-term solution, ensuring superior performance and reliability for daily driving and track use.
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Revshift Subframe Bushing & Reinforcement Combo Kit - Street ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Revshift - Corporate Logo
T#:27405530
Part#: SBRC-E46-80A
Ships on Jul 28, 2026
$ 249.99 USD
Free Shipping on orders $49 and up

Upgrade your E46's rear subframe with the Revshift Combo Kit, featuring 80A durometer polyurethane rear subframe bushings and a comprehensive weld-in reinforcement plate kit. Designed to address the notorious cracking and ripping of rear subframe mounting points over time, this kit provides a robust solution to prevent costly damage to your vehicle.

Key Features:

Complete Solution: Includes 80A durometer polyurethane rear subframe bushings and precision laser-cut 14-gauge steel reinforcement plates for comprehensive subframe reinforcement. Prevents Damage: Weld-in reinforcement plates protect against cracks and damage to the chassis, ensuring long-term durability and stability. Enhanced Handling: Revshift polyurethane rear subframe bushings replace OEM rubber bushings, stiffening mounting points to improve handling and performance. Durable Construction: Polyurethane bushings are designed to last and do not wear out like rubber OEM bushings, providing consistent performance over time. Proper Dampening: Polyurethane bushings properly dampen the rear subframe, enhancing overall vehicle stability and control. Benefits:

Improved handling capabilities Long-lasting durability compared to OEM rubber bushings Protection against bending or cracking of subframe mounts The comprehensive kit includes all necessary components for installation Upgrade your E46's rear subframe with the Revshift Combo Kit for superior handling, durability, and protection against chassis damage. Boost your driving experience with enhanced performance and stability.

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Revshift Subframe Bushing & Reinforcement Combo Kit - Track
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Revshift - Corporate Logo
T#:27405529
Part#: SBRC-E46-95A
Ships in 5 Business Days
$ 249.99 USD
Free Shipping on orders $49 and up

Upgrade your E46's rear subframe with the Revshift Combo Kit, featuring 80A durometer polyurethane rear subframe bushings and a comprehensive weld-in reinforcement plate kit. Designed to address the notorious cracking and ripping of rear subframe mounting points over time, this kit provides a robust solution to prevent costly damage to your vehicle.

Key Features:

Complete Solution: Includes 95A durometer polyurethane rear subframe bushings and precision laser-cut 14-gauge steel reinforcement plates for comprehensive subframe reinforcement. Prevents Damage: Weld-in reinforcement plates protect against cracks and damage to the chassis, ensuring long-term durability and stability. Enhanced Handling: Revshift polyurethane rear subframe bushings replace OEM rubber bushings, stiffening mounting points to improve handling and performance. Durable Construction: Polyurethane bushings are designed to last and do not wear out like rubber OEM bushings, providing consistent performance over time. Proper Dampening: Polyurethane bushings properly dampen the rear subframe, enhancing overall vehicle stability and control. Benefits:

Improved handling capabilities Long-lasting durability compared to OEM rubber bushings Protection against bending or cracking of subframe mounts The comprehensive kit includes all necessary components for installation Upgrade your E46's rear subframe with the Revshift Combo Kit for superior handling, durability, and protection against chassis damage. Boost your driving experience with enhanced performance and stability.

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034 Motorsport Billet Aluminum Rear Differential Insert Kit - BMW F22...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
034Motorsport - Corporate Logo
T#:5858457
Part#: 034-505-2026
In Stock
Sale - Save 10% $ 115.00

This product was last offered at the strikethrough price on
06-28-2026

$ 103.50 USD
Free Shipping
Sale - Save 10%
$ 115.00

This product was last offered at the strikethrough price on
06-28-2026

$ 103.50 USD
Free Shipping
The BMW F2X/F3X Chassis uses rubber differential mounts that deflect under load, causing the delay of power transfer to the rear tires, as well as leading to less-than-optimal handling characteristics during on-throttle and off-throttle transitions. These precision-machined billet aluminum inserts are designed to fill voids in the factory rear differential mounts, and limit differential movement under load without sacrificing ride quality or introducing any perceivable additional noise, vibration, or harshness into the cabin. The result is a more refined, connected driving experience. Designed to work in conjunction with the factory rubber mounts, this insert package was engineered using CAD software and thoroughly tested and refined to provide a significant improvement in handling performance and feel. These inserts were tested extensively on 034Motorsport's in-house F30 BMW 340i Development Vehicle before release. Installation is very simple and is completely reversible. FEATURES: CNC-Machined Billet 6061 Aluminum Construction with Clear Anodized Finish Application-Specific Design for Optimal Fitment and Performance Engineered to Fill Voids in Factory Differential Mount Bushings Reduces Rear Differential Movement During Shifting, Acceleration, and Deceleration Virtually No Additional NVH Transfer Inside Cabin Straightforward Installation WHAT’S INCLUDED: (Qty. 2) Front Bushing Inserts (Qty. 1) Rear Bushing Insert (Qty. 1) Insert Washer PART NUMBER EXCHANGE: Front Bushing: 33 31 6 792 513 (33316792513) Rear Bushing: 33 31 6 880 637 (33316880637)
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Revshift Subframe Bushing & Reinforcement Combo Kit - Drift
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Revshift - Corporate Logo
T#:27405528
Part#: SBRC-E46-70D
Ships in 7 Business Days
$ 249.99 USD
Free Shipping on orders $49 and up

Upgrade your E46's rear subframe with the Revshift Combo Kit, featuring 75D durometer polyurethane rear subframe bushings and a comprehensive weld-in reinforcement plate kit. Designed to address the notorious cracking and ripping of rear subframe mounting points over time, this kit provides a robust solution to prevent costly damage to your vehicle.

Key Features:

Complete Solution: Includes 95A durometer polyurethane rear subframe bushings and precision laser-cut 14-gauge steel reinforcement plates for comprehensive subframe reinforcement. Prevents Damage: Weld-in reinforcement plates protect against cracks and damage to the chassis, ensuring long-term durability and stability. Enhanced Handling: Revshift polyurethane rear subframe bushings replace OEM rubber bushings, stiffening mounting points to improve handling and performance. Durable Construction: Polyurethane bushings are designed to last and do not wear out like rubber OEM bushings, providing consistent performance over time. Proper Dampening: Polyurethane bushings properly dampen the rear subframe, enhancing overall vehicle stability and control. Benefits:

Improved handling capabilities Long-lasting durability compared to OEM rubber bushings Protection against bending or cracking of subframe mounts The comprehensive kit includes all necessary components for installation Upgrade your E46's rear subframe with the Revshift Combo Kit for superior handling, durability, and protection against chassis damage. Boost your driving experience with enhanced performance and stability.

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