Genuine BMW BMW Chassis Reinforcement Kits & Parts for BMW 3 Series E36 (1992-1998)

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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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Genuine BMW E36, Z3 Strut Tower Reinforcement Plates (Pair)
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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
01-07-2026

Starting at $ 63.12 USD
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Starting at $ 63.12 USD
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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 Hex Bolt M12X1,5X90 - 33321136406 - E30,E34,E36,E30 M3 ...
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T#:60235
Part#: 33321136406
Ships in 3 Business Days
1% off MSRP $ 22.29

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$ 22.09 USD
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1% off MSRP
$ 22.29

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

$ 22.09 USD
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Genuine BMW Hex Bolt - M12X1,5X90
This item fits the following BMW Chassis:
E30 M3,E30,E34,E36

Genuine BMW Hex Bolt With Washer - 33176760336
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T#:59645
Part#: 33176760336
In Stock
7% off MSRP $ 25.16

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

$ 23.49 USD
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7% off MSRP
$ 25.16

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

$ 23.49 USD
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Genuine BMW HEX BOLT WITH WASHER

Genuine BMW Eccentric Bolt M12X1,5X82-10.9 - 33326863853 - E36,E46 ...
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T#:179943
Part#: 33326863853
In Stock
3% off MSRP $ 32.99

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

$ 31.99 USD
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3% off MSRP
$ 32.99

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

$ 31.99 USD
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Genuine BMW Eccentric Bolt - M12X1,5X82-10.9
This item fits the following BMW Chassis:
E36 M3,E46 M3,E36,E46


Genuine BMW Reinforcement Plate - Left - E36 M3
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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
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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
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Genuine BMW SPACER RING FOR REAR AXLE RE
Genuine BMW E36 X-Brace Trim Cross Reinforcement
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T#:12599
Part#: 51718410212
Ships in 3 Business Days
2% off MSRP $ 749.99

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$ 734.99 USD
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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 Subframe Reinforcement Kit - With Hardware
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Genuine BMW - Corporate Logo
T#:577329
Part#: 41002256495KT2
Ships in 6 Business Days
$ 350.99

This product was last offered at the strikethrough price on
03-04-2026

$ 349.99 USD
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$ 349.99 USD
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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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E36 Rear Subframe/Chassis Reinforcement Kit
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T#:3971
Part#: 4111225649
Ships in 6 Business Days
$ 298.52 USD
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$ 298.52 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 Subframe Reinforcement Kit
Highly recommended for track cars and cars with elevated horsepower; good insurance for...
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Genuine BMW - Corporate Logo
T#:376158
Part#: 41002256495KT
Ships in 6 Business Days
$ 298.99 USD
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$ 298.99 USD
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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 Pin M8X18 Zns3 - 31336765744 - E30,E34,E36,E38,E53 ...
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Genuine BMW - Corporate Logo
T#:7763
Part#: 31336765744
In Stock
$ 1.99 USD
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Genuine BMW Pin - M8X18 Zns3
This item fits the following BMW Chassis:
E30 M3,E36 M3,E34 M5,E30,E34,E36,E38,E53 X5

Genuine BMW Rear Axle Collar Screw 33326760386
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T#:12736
Part#: 33326760386
In Stock
$ 9.99 USD
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Genuine BMW Collar Screw - M12X1,5X43 Zns3
This item fits the following BMW Chassis:
E36 M3,E46 M3,E85 Z4M,E36,E46,E83 X3,E85 Z4,E86 Z4,E89 Z4

Genuine BMW Front Axle Hex Bolt With Washer 31311136465
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T#:7730
Part#: 31311136465
In Stock
$ 7.99 USD
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Genuine BMW Hex Bolt With Washer - M12X20
This item fits the following BMW Chassis:
E36 M3,E85 Z4M,E34,E36,E85 Z4,E86 Z4



Genuine BMW Rear Axle Reduced-shaft Bolt 33326760361
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T#:13490
Part#: 33326760361
In Stock
10% off MSRP $ 10.27

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

$ 9.23 USD
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10% off MSRP
$ 10.27

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

$ 9.23 USD
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Genuine BMW Reduced-Shaft Bolt - M12X1,5X116-8.8
This item fits the following BMW Chassis:
E36 M3,E46 M3,E85 Z4M,E36,E46,E83 X3,E85 Z4,E86 Z4,E89 Z4

Genuine BMW Fit Bolt - 07119905853 - E36,E85,E36 M3,E85 Z4M
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T#:6401
Part#: 07119905853
In Stock
14% off MSRP $ 15.81

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

$ 13.57 USD
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14% off MSRP
$ 15.81

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

$ 13.57 USD
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Ensure precise fitment for your BMW with the Genuine BMW Fit Bolt - 07119905853, compatible with E36, E85, E36 M3, and E85 Z4M models. Crafted to BMW's exact specifications, this bolt guarantees optimal performance and reliability. Whether you're replacing worn-out bolts or conducting maintenance, trust Genuine BMW quality to keep your vehicle running smoothly. Invest in the Genuine BMW Fit Bolt for a seamless fit and peace of mind on the road.
  • Genuine BMW quality assurance
  • Compatible with various BMW models
  • Ensures precise fitment
  • Optimal performance and reliability
  • Essential for maintenance and repairs


Genuine BMW Fit Bolt
This item fits the following BMW Chassis:
E36 M3,E85 Z4M,E36,E85 Z4,E86 Z4

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Genuine BMW Hex Bolt With Washer 33306760652
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T#:12732
Part#: 33306760652
In Stock
$ 7.99 USD
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GENUINE BMW HEX BOLT WITH WASHER FOR FRONT CONTROL ARM BUSHING BRACKET AND OTHER APPLICATIONS

Genuine BMW Hex Bolt - 07119900402 - E36,E46,E85
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Genuine BMW - Corporate Logo
T#:21651
Part#: 07119900402
In Stock
$ 5.11 USD
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Genuine BMW Hex Bolt
This item fits the following BMW Chassis:
E36 M3,E46 M3,E85 Z4M,E36,E46,E85 Z4,E86 Z4


Front Strut Mount Gasket - E36, E38, Z3
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Genuine BMW - Corporate Logo
T#:15491
Part#: 31331094288
In Stock
$ 3.99 USD
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GENUINE BMW WASHER-GASKET
Genuine BMW Rear Axle Hex Bolt With Washer 33176760343
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T#:13461
Part#: 33176760343
In Stock
5% off MSRP $ 8.75

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

$ 8.27 USD
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5% off MSRP
$ 8.75

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

$ 8.27 USD
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Genuine BMW Hex Bolt With Washer - M12X100-10.9
This item fits the following BMW Chassis:
E60 M5,E63 M6,E46 M3,E82 1M Coupe,E85 Z4M,E46,E63,E65,E82,E85 Z4,E86 Z4,E90,E92,E93,F22,F25 X3,F26 X4 X4,F30,F31,F32,F33,F34,F36

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