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BMW Chassis Reinforcement Kits & Parts

Made in the USAAs much of an "Ultimate Driving Machine" it is, many BMW models unfortunately suffer from weak points in the chassis. Over the years we have uncovered many weak or failure-prone areas in the chassis and have developed our own reinforcing solutions for them. And we continue to be the leading experts on BMW chassis reinforcing. Failures can come from a number, or combination, of causes: improper maintenance, age and mileage, poor design, environmental factors, poor repair work, and over-stressing modifications. The longer you let your car go without repairing or reinforcing these areas, the closer it gets to crumbling apart. Our chassis reinforcement kits are designed to first identify potential weak points and then strengthen and reinforce the existing design.

Most of our kits are not labor intensive although welding is usually required. If you suspect your chassis may have structural problems we recommend taking it to a well-known bodyshop or restoration shop. (find out who your local BMW dealer uses - we sell many of our kits to dealer-authorized repair shops). Making the preventative fix simple and effective is better than a long and complicated repair after the failure. Our kits are not usually used for fixing existing damage (only your body shop can determine the correct course of action). But our kits have been proven under extreme conditions on racetracks around the world to prevent many of the costly - and dangerous - chassis problems.

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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
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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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aFe CONTROL Front Suspension Brace Set - Raw Stainless Steel Finish -...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
AFE - Corporate Logo
T#:4840538
Part#: 450-721003-A
Ships in 2 Business Days
$ 285.00 USD
Free Shipping on orders $49 and up
Stiffen up your chassis and give your engine bay a unique look with aFe's Control fabricated Strut Braces (also known as Strut Tower Brace or STB). Made with 14-gauge steel, the I-beam design is meticulously TIG welded to form a lightweight, strong brace that will increase front-end rigidity, thus improving turn-in response. aFe Control Suspension products are engineered and manufactured in their Corona, California manufacturing facility. Features: Laser Cut, 14-Gauge 304 Stainless Steel TIG Welded I-Beam Design Grade 5 Burnt Blue Titanium Mounting Bolts Fits All Supra Models Direct-Fit Installation Requires No Modifications Proudly Made in the USA
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aFe CONTROL Front Suspension Brace Set - Black Powder Coat Finish - T...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
AFE - Corporate Logo
T#:4840539
Part#: 450-721003-B
Ships in 2 Business Days
$ 262.00 USD
Free Shipping on orders $49 and up
Stiffen up your chassis and give your engine bay a unique look with aFe's Control fabricated Strut Braces (also known as Strut Tower Brace or STB). Made with 14-gauge steel, the I-beam design is meticulously TIG welded to form a lightweight, strong brace that will increase front-end rigidity, thus improving turn-in response. aFe Control Suspension products are engineered and manufactured in their Corona, California manufacturing facility. Features: Laser Cut, 14-Gauge Steel TIG Welded I-Beam Design Grade 5 Burnt Blue Titanium Mounting Bolts Durable Wrinkle Black Powder Coat Fits All Supra Models Direct-Fit Installation Requires No Modifications Proudly Made in the USA
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aFe CONTROL Front Suspension Brace Set - Red Powder Coat Finish - Toy...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
AFE - Corporate Logo
T#:4840541
Part#: 450-721003-R
Ships in 3 Business Days
$ 262.00 USD
Free Shipping on orders $49 and up
Stiffen up your chassis and give your engine bay a unique look with aFe's Control fabricated Strut Braces (also known as Strut Tower Brace or STB). Made with 14-gauge steel, the I-beam design is meticulously TIG welded to form a lightweight, strong brace that will increase front-end rigidity, thus improving turn-in response. aFe Control Suspension products are engineered and manufactured in their Corona, California manufacturing facility. Features: Laser Cut, 14-Gauge Steel TIG Welded I-Beam Design Grade 5 Burnt Blue Titanium Mounting Bolts Durable Textured Red Powder Coat Fits All Supra Models Direct-Fit Installation Requires No Modifications Proudly Made in the USA
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aFe CONTROL Front Suspension Brace Set - Blue Powder Coat Finish - To...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
AFE - Corporate Logo
T#:4840540
Part#: 450-721003-L
Ships in 2 Business Days
$ 262.00 USD
Free Shipping on orders $49 and up
Stiffen up your chassis and give your engine bay a unique look with aFe's Control fabricated Strut Braces (also known as Strut Tower Brace or STB). Made with 14-gauge steel, the I-beam design is meticulously TIG welded to form a lightweight, strong brace that will increase front-end rigidity, thus improving turn-in response. aFe Control Suspension products are engineered and manufactured in their Corona, California manufacturing facility. Features: Laser Cut, 14-Gauge Steel TIG Welded I-Beam Design Grade 5 Burnt Blue Titanium Mounting Bolts Durable Blue Powder Coat Fits All Supra Models Direct-Fit Installation Requires No Modifications Proudly Made in the USA
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Tunnel Brace For F56+ MINI Cooper - Center Middle Brace
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Scorpion - Corporate Logo
T#:37959682
Part#: SMN031B
Ships in 2 Business Days
$ 105.00 USD
Free Shipping on orders $49 and up
Reduces body roll and adds additional bracing to the main tunnel
Vargas Billet Ride Height Bracket - Toyota GR Supra (A90/A91) ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Vargas Turbo Technologies - Corporate Logo
T#:51672702
Part#: VTT-A9X-RIDE-BRA
Ships in 10 Business Days
New Item
$ 79.99 USD
Free Shipping
$ 79.99 USD
Free Shipping
The Vargas Billet Ride Height Bracket is the "peace of mind" upgrade every MKV Supra owner needs.

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
Free Shipping
$ 3,115.00 USD
Free Shipping
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
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Active Autowerke - Corporate Logo
T#:51320825
Part#: 11-129
Ships in 3 Business Days
New Item
$ 332.00 USD
Free Shipping
$ 332.00 USD
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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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HEXAGON SCREW WITH FLANGE
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine MINI - Corporate Logo
T#:517215
Part#: 41007058312
Ships in 2 Business Days
10% off MSRP $ 9.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 8.99 USD
Free Shipping on orders $49 and up
10% off MSRP
$ 9.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 8.99 USD
Free Shipping on orders $49 and up
Genuine BMW Chassis Brace - Right - E39 M5
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:117923
Part#: 51717892186
Ships in 8 Business Days
2% off MSRP $ 366.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 359.99 USD
Free Shipping
2% off MSRP
$ 366.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 359.99 USD
Free Shipping


Genuine BMW Rod Right
This item fits the following BMW Chassis:
E39 M5,E39