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BMW chassis reinforcement braces provide essential rigidity and durability to prevent chassis flex, cracking, and stress fracturesaEUR"common issues in high-performance driving and aging BMW models. Over time, aggressive cornering, track use, and even daily driving can cause weak points in suspension mounting areas, subframes, and shock towers, leading to poor handling, alignment shifts, and premature wear on suspension components. Upgrading with reinforcement plates, strut tower braces, subframe braces, and sway bar reinforcements improves structural integrity, enhances steering response, and prevents costly frame repairs. Whether for street use, spirited driving, or track performance, Turner Motorsport offers precision-engineered BMW chassis reinforcement braces to ensure superior strength, stability, and long-term durability for your ultimate driving machine.
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Karbonius E36 M3 / 3-Series Carbon Strut Brace
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Karbonius Composites - Corporate Logo
T#:28104803
Part#: E36SB01
Back Ordered
Starting at $ 839.00 USD
Free Shipping on orders $49 and up
Starting at $ 839.00 USD
Free Shipping on orders $49 and up
Strut tower bar is one of the most common and effective upgrades in a vehicle. With installation of strut bar bodywork gets structural strength, preventing tower flex and alignment changes during sporty driving. Improve your BMW with Karbonius strut bar and prepare for people staring! In Karbonius Composites, we have inspired in E46 BMW performance strut bar to create our own strut bar. We have designed a piece extremely strong but light at the same time, what adds not only strength and stability, but also a spectacular eye-catching look. A strut bar manufactured in prepreg carbon fiber and cured in aluminum mold in autoclave; CNC machined manufactured in 5-axis machine. Standard finish includes varnish high gloss and natural aluminum anodized. Product Details: Fits all E36 and M3 2x2 weave Very light, only 1150 grs weight Perfect fitment and easy installation 100% carbon fiber prepreg Cured in aluminum mold and autoclave Controlled break zone Exclusive and numbered piece 2-year warranty NOTE: All pieces are numbered to guarantee authenticity and origin.
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MMX Underbody Chassis Brace - F80, F82, F83, F87
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
MMX Performance - Corporate Logo
T#:55713525
Part#: MMR13-1000
In Stock
New Item
$ 295.00 USD
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$ 295.00 USD
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The MMX Performance Underbody Chassis Brace is engineered specifically for the F8x platform to eliminate the unwanted flex that plagues the factory mid-section. On the track or your favorite backroad, flex alters your alignment mid-corner, reducing tire contact patch.
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Burger Motorsports Billet Strut Cross Braces - Red - BMW G22/G23/G26 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Burger Motorsports - Corporate Logo
T#:46924996
Part#: G22BSCB-RED
Ships on Jul 28, 2026
$ 199.00 USD
Free Shipping on orders $49 and up
Burger Motorsports' strut braces are CNC machined from thick, lightweight billet aluminum with the BMS logo engraved on the top middle. These strut braces are a thick, solid one-piece design and give an exclusive look under the hood and extra stabilization to the chassis.
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Burger Motorsports Billet Strut Cross Braces - Black - BMW G22/G23/G2...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Burger Motorsports - Corporate Logo
T#:46924999
Part#: G22BSCB-BLK
Ships on Jul 28, 2026
$ 199.00 USD
Free Shipping on orders $49 and up
Burger Motorsports' strut braces are CNC machined from thick, lightweight billet aluminum with the BMS logo engraved on the top middle. These strut braces are a thick, solid one-piece design and give an exclusive look under the hood and extra stabilization to the chassis.
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Burger Motorsports Billet Strut Cross Braces - Blue - BMW G22/G23/G26...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Burger Motorsports - Corporate Logo
T#:46924998
Part#: G22BSCB-BLU
Ships on Jul 28, 2026
$ 199.00 USD
Free Shipping on orders $49 and up
Burger Motorsports' strut braces are CNC machined from thick, lightweight billet aluminum with the BMS logo engraved on the top middle. These strut braces are a thick, solid one-piece design and give an exclusive look under the hood and extra stabilization to the chassis.
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Rogue Engineering F97 X3M / F98 X4M Billet Aluminum Engine Support Br...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Rogue Engineering - Corporate Logo
T#:26438195
Part#: RE.345
Ships in 3 Business Days
$ 329.00 USD
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$ 329.00 USD
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The Rogue Engineering billet aluminum engine support braces are CNC'd from lightweight ACQ aluminum, specifically designed in Solidworks 3D. The sides of each brace are milled to reduce weight while look aesthetically pleasing. While each OEM steel brace weighs 688g, each of the Rogue Engineering support braces weigh only 380g. The total savings of 1.35 lbs! Sold as a pair, available in anodized black with RE logo laser engraved into the front part of the brace.
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Burger Motorsports Billet Strut Cross Braces - Silver - BMW G22/G23/G...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Burger Motorsports - Corporate Logo
T#:46924997
Part#: G22BSCB-SIL
Ships on Jul 28, 2026
$ 199.00 USD
Free Shipping on orders $49 and up
Burger Motorsports' strut braces are CNC machined from thick, lightweight billet aluminum with the BMS logo engraved on the top middle. These strut braces are a thick, solid one-piece design and give an exclusive look under the hood and extra stabilization to the chassis.
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MINI R50 R53 M7 Stage II Suspension Kit
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
M7 Speed - Corporate Logo
T#:31191876
Part#: 53-5M7551
Ships in 3 Business Days
$ 678.99 USD
$ 678.99 USD

MINI R50 R53 M7 Stage II Suspension Kit is perfect for the ultimate MINI performance enthusiast. M7 Tuning has bundled the final two pieces needed to transform your MINI from a go-kart into an F1 turning machine. If you already have the M7 Strut Tower Brace, this bundle is for you. Add these industry-leading bolt-on MINI Cooper suspension components and experience instant grip like never before. This Stage II Bundle includes the exclusive Under Strut System and the M7 Rear Chassis Brace for the R53 Mini Cooper.

Compared to buying these kits separately, you save money and gain a significant upgrade in performance. One of the biggest improvements you can make to gain grip is stiffening your chassis. A stiffer chassis allows the suspension, like the springs, shocks, and sway bars to work more effectively and do their job as intended, keeping the tires in better contact with the road. The M7 Under Strut System (USS) and Rear Chassis Brace feature easy-to-install integrated billet and extruded aluminum pieces that will brace, connect, and triangulate your MINI Cooper chassis for greatly improved chassis stiffness. This maximizes grip, increases steering response, and reduces understeer during aggressive turn-in or emergency maneuvers. This is a "WOW! Why didn't I do this sooner?" addition to your favorite speed monster. M7 Tuning products are engineered, tested, and proven to perform.

Under Strut System:

  • Greatly improves chassis stiffness
  • Enhances turn-in capability and reduces understeer
  • Made of extruded and CNC machined aluminum with a black anodized finish
  • Durable and designed to prevent chipping and corrosion
  • Includes stainless steel fasteners and necessary tools for installation
  • Easy to install

Rear Chassis Brace:

  • Reduces chassis flex for improved handling
  • Enhances rear-end stability and responsiveness
  • Allows for comfortable use of the rear seats
  • Provides a mounting option for a fire extinguisher or other accessories
  • Compatible with M7 Under Strut System for maximum chassis stiffening
  • No sacrifice of passenger comfort
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iSweep Power Brace Complete Whole Kit - F55, F56, F57
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iSWEEP - Corporate Logo
T#:54388392
Part#: ISCCWK-F56
Ships in 2 Business Days
New Item
$ 807.99 USD
$ 807.99 USD
Don't let chassis flex compromise your MINI’s handling. From the factory, the F55, F56, and F57 platforms suffer from structural deflection under heavy cornering loads. To extract true track-ready performance and razor-sharp steering response, your chassis needs to be tied together.
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G8X M2 / M3 / M4 CSL Carbon Front Strut Brace
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Karbonius Composites - Corporate Logo
T#:26471475
Part#: G8XSB02-CF-AB
Ships in 3 Business Days
$ 3,115.00 USD
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$ 3,115.00 USD
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M4 CSL brace has been designed to enhance the sportive character of M cars, at the same time as it brings the best rigidity to the chassis. Designed and manufactured in Spain under strict quality requirements according to UNE-EN ISO 9001:2015. This piece is made by hand with the best carbon fiber prepreg. This piece is manufactured by combining craft and technology. On the one hand, with the care and attention to detail that characterizes our company, and on the other, with the use of the most modern equipment in some critical points of the process, such as 3D scanning, autoclave curing, and robotic cutting. The G8X CSL strut brace has been manufactured with monobloc tubular technology, avoiding unnecessary joints that could result in weak points. Lamination has been carefully designed, and we include 3 different fabrics, all best quality, including high-modulus unidirectional carbon. 6061 aluminum machined components complete the piece providing great resistance to wear in the area of joint to the chassis. Not just to save weight, but to achieve the strength and rigidity necessary for a functional part with similar characteristics to the OEM part. The result? A piece with an OEM finish and fitment, but with an awesome appearance and only 1.8 kilos, which is a significant weight reduction compared to the original bar which is 3.5 kilos.
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Active Autowerke Chassis Brace - G2X M340i/M440i
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Active Autowerke - Corporate Logo
T#:51320825
Part#: 11-129
Ships in 3 Business Days
New Item
$ 332.00 USD
Free Shipping
$ 332.00 USD
Free Shipping
Active Autowerke designed this piece to allow for more clearance with aftermarket mid-pipes. Factory clearance is tight and not conducive for larger than factory diameter piping. This piece allows for more clearance without sacrificing any structural rigidity and is made from high-strength 6061 aluminum to match the strength of the OEM brace.
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F-Chassis Non-M Carbon Fiber Strut Brace Retrofit Kit - 5 Bolt ...
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For Vehicles With 5-Bolt Strut Mounts Only!
Genuine BMW - Corporate Logo
T#:27871816
Part#: MSTRUTBRACE5KT
Ships in 8 Business Days
$ 4,416.99 USD
$ 4,416.99 USD
For enthusiasts searching for that perfect, next OE-Plus mod, look no further. We have specially curated this kit utilizing all genuine OE BMW components for a surefire fit and seamless installation! Take the engine bay of your N20, B46, N47, N55, or B58-powered F-Chassis BMW to a new level! Includes: New Guide Support Bearings Genuine BMW Alloy (Rear Positioned) Front Strut Brace Genuine BMW M3/M4 Carbon Strut Brace Sealing Trim (Driver and Passenger Sides) All Necessary Mounting Hardware Note: This Kit is Not Designed for Use on M-Cars!
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