Showing 27 results for "chassis reinforcement"

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Genuine BMW - Corporate Logo
T#:3971
Part#: 4111225649
Ships in 6 Business Days
$ 298.52

This product was last offered at the strikethrough price on
07-07-2026

$ 290.02 USD
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$ 290.02 USD
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These are the BMW factory chassis reinforcement plates that came on the E36 M3s (some very early 1994-production M3 models may not have had them). This reinforcement should be done on all non-M E36 models especially when used in track/autocross situations. The kit is a set of 4 plates that are added to reinforce the rear subframe chassis mounts. BMW discovered that over time, due to the bending of the rear of the chassis in conjunction with the movement allowed by the rubber bushings in the rear, the chassis mounting points for the subframe would flex, weaken, and if left unattended, rip out of the chassis. The stock mounts are basically a flat plate with an internally threaded tube that are welded to the chassis. The flex of the rear subframe causes the threaded tube and mounting bolt to act as a lever arm at the point where the flat plate is welded to the chassis, weakening the surrounding sheet metal. Due to the direction of force of the torque applied by the drivetrain on the subframe, the first mount to rip out is the passenger�s side front mount, followed by the drivers side rear mount. Having these plates welded to the underside of the chassis significantly stiffens the mounts and stops the weakening of them.

In order to weld these plates in, the rear suspension, rear subframe, exhaust, and driveshaft must be removed. It is also strongly recommended that the back seat, rear interior, trunk interior, and fuel tank are removed and all fuel lines are capped to reduce the fire hazard while welding.


Note the damaged sheet metal


Sub-frame Removed


Area Prepped and Ready to Weld


Plates Installed



This item fits the following BMWs:
1992-1998 E36 BMW 318i 318is 323is 325i 325is 328i 328is
2/1994-6/1994 E36 BMW M3, although there is no clear transition on when the factory started building M3s with the reinforcements
all 1996-1999 M3s should have these reinforcements. Only early 1995 M3s are in question.
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Genuine BMW - Corporate Logo
T#:323
Part#: 51717036781
In Stock
$ 57.99 USD
Free Shipping on orders $49 and up
Like the E36 before it, the front strut towers on the E46 are notoriously weak. Under normal driving conditions with a stock, fresh suspension it is unlikely that you will ever have a problem. But with an upgraded street or race suspension with firm springs much of the energy from pounding the road is transmitted to the thin sheet metal in the strut tower. This pounding will cause the tower to deform or even crack. Look for 'mushrooming' or deformity around the holes for the three mounting studs at the top of the strut tower. The sheetmetal around the holes should really be flat and square. Poor shocks or stiff suspensions will actually cause this sheetmetal to pop up.

These factory BMW reinforcement plates will help disperse the energy and save you from costly repairs in the future. A strut brace also helps to prevent this but these plates are designed to reinforce the strut tower from the bottom. The install over your strut mount or camber plate and simply add thickness (strength) to the strut tower. They can be sandwiched in place and do not require welding.

This item fits the following BMWs:
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
2001-2006 E46 BMW M3*
* - The stock M3 upper strut mount already does a good job of dispersing the loads of the suspension. These reinforcement plates will fit a stock mount for added strength but need to be trimmed to fit inside the strut tower. The are very strongly recommended for all M3s with coil over suspensions because aftermarket coil overs typically have a smaller surface area for their strut mounts.
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Genuine BMW - Corporate Logo
T#:338358
Part#: 31312489795K
In Stock
$ 63.99

This product was last offered at the strikethrough price on
08-25-2026

Starting at $ 61.88 USD
Free Shipping on orders $49 and up
Starting at $ 61.88 USD
Free Shipping on orders $49 and up
The shock towers on the E36 and Z3 are notoriously weak. Under normal driving conditions with a stock, fresh suspension it is unlikely that you will ever have a problem. But with an upgraded street or race suspension with firm springs much of the energy from pounding the road is transmitted to the thin sheet metal in the strut tower. This pounding will cause the tower to deform or even crack. Look for 'mushrooming' or deformity around the holes for the three mounting studs at the top of the strut tower. The sheetmetal around the holes should really be flat and square. Poor shocks or stiff suspensions will actually cause this sheetmetal to pop up.

These factory BMW reinforcement plates will help disperse the energy and save you from costly repairs in the future. A strut brace also helps to prevent this but these plates are designed to reinforce the strut tower from the bottom. The install over your strut mount or camber plate and simply add thickness (strength) to the strut tower. They can be sandwiched in place and do not require welding. BMW part number 31312489795

This item fits the following BMWs:
1992-1998 E36 BMW 318i 318is 318ti 318ic 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1997-2002 Z3 BMW Z3 1.9 Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i M Roadster M Coupe. Note: some Z3 models already come from the factory with these plates.
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Genuine BMW - Corporate Logo
T#:16167
Part#: 51717895250
In Stock
2% off MSRP $ 123.99

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

$ 120.99 USD
Free Shipping
2% off MSRP
$ 123.99

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

$ 120.99 USD
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Connects the strut brace bar to the strut tower.

 

GENUINE BMW BRACKET RIGHT


Genuine BMW - Corporate Logo
T#:194819
Part#: 31102284631
In Stock
4% off MSRP $ 347.99

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

$ 332.99 USD
4% off MSRP
$ 347.99

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

$ 332.99 USD


Genuine BMW Structural Reinforcement Panel -
This item fits the following BMW Chassis:
F80 M3,F82 M4,F83

Genuine BMW - Corporate Logo
T#:25185
Part#: 31336788776
Ships in 3 Business Days
13% off MSRP $ 219.99

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

$ 190.99 USD
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13% off MSRP
$ 219.99

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

$ 190.99 USD
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Genuine BMW Support Bearing Flange -
This item fits the following BMW Chassis:
E70 X5,E71


Genuine BMW - Corporate Logo
T#:71254
Part#: 41148152998
Ships in 3 Business Days
$ 28.99 USD
Free Shipping on orders $49 and up
Genuine BMW SUPPORT FOR SHOCK ABSORBER R
Genuine BMW - Corporate Logo
T#:115821
Part#: 51618055091
Ships in 3 Business Days
2% off MSRP $ 209.99

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

$ 204.99 USD
Free Shipping
2% off MSRP
$ 209.99

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

$ 204.99 USD
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Connects the strut tower brace bar to the strut tower.


Genuine BMW Ring, Strut Tower Brace, Left
This item fits the following BMW Chassis:
E82 1M Coupe,E82,E90,E92,E93

 

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Genuine BMW - Corporate Logo
T#:69355
Part#: 41112256497
Ships in 3 Business Days
2% off MSRP $ 84.99

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

$ 82.99 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 84.99

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

$ 82.99 USD
Free Shipping on orders $49 and up
Genuine BMW SPACER RING FOR REAR AXLE RE

Genuine BMW - Corporate Logo
T#:376014
Part#: 33326777637KT
Ships in 6 Business Days
$ 376.99 USD
$ 376.99 USD

Improve the handling of the E90 with a rear chassis brace from the E92. A chassis brace, also known as an A-brace, adds rigidity to the chassis to improve handling.

This kit includes:

Rear chassis brace
Rear push rods - left and right
hardware

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Genuine BMW - Corporate Logo
T#:117669
Part#: 51717180318
Ships in 3 Business Days
3% off MSRP $ 34.99

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

$ 33.99 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 34.99

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

$ 33.99 USD
Free Shipping on orders $49 and up


Genuine BMW Crossbrace, Front Right -
This item fits the following BMW Chassis:
F06,F10,F12,F13

Genuine BMW - Corporate Logo
T#:12733
Part#: 33312229899
Ships in 3 Business Days
2% off MSRP $ 434.99

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

$ 425.99 USD
2% off MSRP
$ 434.99

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

$ 425.99 USD
Connects the frame rails to the rear subframe - does not include hardware


Genuine BMW - Corporate Logo
T#:60382
Part#: 33326777637
Ships in 3 Business Days
2% off MSRP $ 139.99

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

$ 136.99 USD
2% off MSRP
$ 139.99

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

$ 136.99 USD


Genuine BMW Tension Strut -
This item fits the following BMW Chassis:
E92

Genuine BMW - Corporate Logo
T#:54023
Part#: 31106786568
Ships in 3 Business Days
5% off MSRP $ 221.99

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

$ 211.99 USD
Free Shipping
5% off MSRP
$ 221.99

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

$ 211.99 USD
Free Shipping


Genuine BMW Reinforcement Plate -
This item fits the following BMW Chassis:
E70 X5,E71

Genuine BMW - Corporate Logo
T#:71253
Part#: 41148152997
In Stock
$ 28.99 USD
Free Shipping on orders $49 and up
Genuine BMW SUPPORT FOR SHOCK ABSORBER L

Genuine BMW - Corporate Logo
T#:12599
Part#: 51718410212
Ships in 3 Business Days
2% off MSRP $ 749.99

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

$ 734.99 USD
Free Shipping
2% off MSRP
$ 749.99

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

$ 734.99 USD
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Original BMW chassis reinforcement developed for the special M3 LTW (Lightweight) model. This tubular-steel part connects the front subframe to the body and gives the car a more solid feel with less flex. Every convertible and Roadster model uses a similar design to address inherent chassis flex in the front of the car. Fits all E36 and Z3 chassis BMWs. 

By adding this Genuine BMW Motorsport cross brace, you'll dramatically reduce that flex and movement in the front half of the body on your E36. This is a must-have on any BMW E36 that has an upgraded suspension, larger sway bars, is driven aggressively or sees ANY amount of track time. The Xbrace is a factory BMW Motorsport part, so design and fit are both great and the installation is straight forward and easy. Perhaps best of all is the low price compared to the impact the Motorsport X-brace has on the E36 chassis. Does not come with any needed hardware for installation.

We also offer the E36 x-brace with the required hardware Click Here
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Genuine BMW - Corporate Logo
T#:577329
Part#: 41002256495KT2
Ships in 6 Business Days
$ 349.99

This product was last offered at the strikethrough price on
07-07-2026

$ 341.99 USD
Free Shipping
$ 341.99 USD
Free Shipping

Reinforce the weak points of your E36 BMW's chassis with this Genuine BMW reinforcement kit. These plates and hardware reinforce where the subframe meets the chassis to increase the unibody's rigidity, helping to prevent potential damage.

Two studs, two bolts, and two nuts that secure the subframe are all included.

Welding is required, professional installation is recommended.

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Genuine BMW - Corporate Logo
T#:376158
Part#: 41002256495KT
Ships in 6 Business Days
$ 298.99

This product was last offered at the strikethrough price on
07-07-2026

$ 290.99 USD
Free Shipping
$ 290.99 USD
Free Shipping

If you drive your BMW in a spirited manner, have an extensive list of modifications such as turbo/supercharger or track your BMW, reinforcement of the subframe is a must. E36 BMWs are known for being very capable machines, but they are also known for less than stellar subframe rigidity. With this kit, it will reinforce where the subframe meets the chassis, making for a much stronger and much more rigid frame. You will notice sharper and more precise handling, and you can stop worrying about costly chassis/subframe damage.

Welding is required, professional installation is recommended.

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Genuine BMW - Corporate Logo
T#:54079
Part#: 31112282970
Ships in 5 Business Days
1% off MSRP $ 471.99

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

$ 468.99 USD
Free Shipping on orders $49 and up
1% off MSRP
$ 471.99

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

$ 468.99 USD
Free Shipping on orders $49 and up

This plate mounts underneath the front suspension and adds rigidity to the chassis.


Genuine BMW Reinforcement Plate
This item fits the following BMW Chassis:
E60 M5,E63 M6,E63
 

 

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Genuine BMW - Corporate Logo
T#:177596
Part#: 51618048827
Ships in 9 Business Days
4% off MSRP $ 53.99

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

$ 51.99 USD
Free Shipping on orders $49 and up
4% off MSRP
$ 53.99

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

$ 51.99 USD
Free Shipping on orders $49 and up


Genuine BMW Connecting Member, Rear Tunnel - M
This item fits the following BMW Chassis:
F06,F10,F12,F13


Genuine BMW - Corporate Logo
T#:117923
Part#: 51717892186
Ships in 3 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
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Genuine BMW Rod Right
This item fits the following BMW Chassis:
E39 M5,E39


Genuine BMW - Corporate Logo
T#:21977
Part#: 51717892185
Ships in 9 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
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Genuine BMW Rod Left
This item fits the following BMW Chassis:
E39 M5,E39

Genuine BMW - Corporate Logo
T#:70936
Part#: 41141943224
Special Order: No Guaranteed ETA
3% off MSRP $ 66.99

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

$ 64.99 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 66.99

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

$ 64.99 USD
Free Shipping on orders $49 and up


Genuine BMW Support Right -
This item fits the following BMW Chassis:
E30

Genuine BMW - Corporate Logo
T#:70935
Part#: 41141943223
Special Order: No Guaranteed ETA
3% off MSRP $ 66.99

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

$ 64.99 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 66.99

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

$ 64.99 USD
Free Shipping on orders $49 and up


Genuine BMW Support Left -
This item fits the following BMW Chassis:
E30



Genuine BMW - Corporate Logo
T#:54977
Part#: 31332227366
Ships on Oct 16, 2026
6% off MSRP $ 206.99

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

$ 193.99 USD
Free Shipping
6% off MSRP
$ 206.99

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

$ 193.99 USD
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Genuine BMW Guide Support -
This item fits the following BMW Chassis:
E34

Genuine BMW - Corporate Logo
T#:27871816
Part#: MSTRUTBRACE5KT
Back Ordered
$ 4,416.99

This product was last offered at the strikethrough price on
09-03-2026

$ 4,387.99 USD
$ 4,387.99 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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Genuine BMW - Corporate Logo
T#:27871812
Part#: MSTRUTBRACE3KT
Back Ordered
$ 4,054.99

This product was last offered at the strikethrough price on
09-09-2026

$ 4,051.99 USD
$ 4,051.99 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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