Find Parts That Fit Your Vehicle

Home
Suspension
Chassis Reinforcement Kits & Parts

BMW Chassis Reinforcement Kits & Parts

As 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.

Sub-Categories

Braces (4)

Sort By:

4mm Heavy Duty Rear Shock Mount Reinforcement Plate Set

T#:376177

Part#: 002478ECS01KT

In Stock

Sale - Save 25% $ 85.99

This product was last offered at the strikethrough price on
06-13-2026

$ 64.48 USD

Add to Wish List

Qty

Sale - Save 25%

$ 85.99

This product was last offered at the strikethrough price on
06-13-2026

$ 64.48 USD

Add to Wish List

A very common weak point on the 3 series BMW is the sheetmetal of the rear shock tower. The sheetmetal here is relatively thin and very susceptible to stress and fatigue. A worn out shock will bottom-out more often and this energy is transferred through the bump stop and into the metal chassis. Stiffer shocks and shock mounts also put more stress on the sheetmetal. Factor in age, mileage, and environmental conditions and it's not a surprise that we see shock tower failures often. BMW addressed this issue with reinforcements of their own but our's are thicker for additional strength. This kit mounts on top of the shock tower and can either be bolted or welded in place. Because of the shape of the rear shock tower, these do not fit cabrio/convertible cars.

Show More Show Less

Heavy Duty Convertible Rear Shock Mount Reinforcement Plate Set ...

T#:376176

Part#: 002478ECS02KT

In Stock

Sale - Save 25% $ 95.98

This product was last offered at the strikethrough price on
06-13-2026

$ 71.98 USD

Add to Wish List

Qty

Sale - Save 25%

$ 95.98

This product was last offered at the strikethrough price on
06-13-2026

$ 71.98 USD

Add to Wish List

The upper rear shock bolts to the sheetmetal in the folding top well on convertible models. As the mileage goes up more and more stress is put on this sheetmetal and it can actually tear away from the rest of the chassis. Look for lttle cracks originating from the mouning holes. This reinforcement plate helps spread the shock loads around the sheetmetal and reduce stress in localized areas. Price is for the pair.

Show More Show Less

Heavy Duty Rear Sway Bar Bracket Upgrade - E30

T#:9222692

Part#: 016965LA

In Stock

Sale - Save 25% $ 118.99

This product was last offered at the strikethrough price on
06-14-2026

Starting at $ 89.24 USD

Add to Wish List

Sale - Save 25%

$ 118.99

This product was last offered at the strikethrough price on
06-14-2026

Starting at $ 89.24 USD

Add to Wish List

A major upgrade over the weak stamped steel factory sway bar brackets. These are critical for those running larger, aftermarket sway bars. Includes polyurethane bushings.

MINI R56 ECS Strut Tower Plate Kit - Black

T#:588743

Part#: 001718ECS01

In Stock

Sale - Save 3% $ 152.99

This product was last offered at the strikethrough price on
06-14-2026

$ 148.40 USD

Add to Wish List

Qty

Sale - Save 3%

$ 152.99

This product was last offered at the strikethrough price on
06-14-2026

$ 148.40 USD

Add to Wish List

E36, E46, Z3 Rear Shock Mount Reinforcement (Sold Each)

T#:578621

Part#: B3300044

In Stock

Sale - Save 3% $ 8.99

This product was last offered at the strikethrough price on
05-03-2026

$ 8.68 USD

Add to Wish List

Qty

Sale - Save 3%

$ 8.99

This product was last offered at the strikethrough price on
05-03-2026

$ 8.68 USD

Add to Wish List

This is a direct replacement for the factory BMW rear shock mount reinforcement, as equipped by BMW on Z3 models. This also fits all E36 and E46 models as well. Turner Motorsport makes our own that are thicker but these can also do a good job of preventing cracks and deformation of the rear shock towers. Priced per reinforcement plate. Order 2 to cover both rear shock towers. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty. This item fits the following BMWs: 1992-1999 E36 BMW 318i 318is 318ti 318ic 323is 325i 325is 328i 328is M3 (not for convertible models) 1999-2006 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3 (not for convertible models) 1997-2002 Z3 BMW Z3 1.9 Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i M Roadster M Coupe

Show More Show Less

iSweep Power Brace Complete Whole Kit - F55, F56, F57

T#:54388392

Part#: ISCCWK-F56

Ships in 2 Business Days

$ 807.99 USD

Add to Wish List

Qty

$ 807.99 USD

Add to Wish List

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.

Show More Show Less

Active Autowerke Chassis Brace - G2X M340i/M440i

T#:51320825

Part#: 11-129

Ships in 3 Business Days

$ 332.00 USD

Add to Wish List

Qty

$ 332.00 USD

Add to Wish List

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.

Show More Show Less

Vargas Billet Ride Height Bracket - Toyota GR Supra (A90/A91) ...

T#:51672702

Part#: VTT-A9X-RIDE-BRA

Ships in 10 Business Days

$ 79.99 USD

Add to Wish List

Qty

$ 79.99 USD

Add to Wish List

The Vargas Billet Ride Height Bracket is the "peace of mind" upgrade every MKV Supra owner needs.

G8X M3 M4 Experience Package

Call In Or Chat For Best Price!

T#:30198000

Part#: G8X-M3M4-E-GBGA

Back Ordered

Sale - Save 10% $ 5,849.99

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

$ 5,264.96 USD

Add to Wish List

Qty

Sale - Save 10%

$ 5,849.99

This product was last offered at the strikethrough price on
07-31-2026

$ 5,264.96 USD

Add to Wish List

Going beyond its Foundation counterpart, the Dinan Experience packages address not only the engine but also the chassis for a complete solution in the form of a wholly tuned Dinan vehicle. While adding power modifiers is often the go-to path when beginning the modification journey, it does not fully consider what makes the car infinitely more enjoyable in scenarios outside of WOT pulls. With the addition of suspension upgrades integrated alongside the power adders, the vehicle is transformed into something more than just the sum of its parts. It's a comprehensive answer to delivering additional technical capabilities in the form of increased engine performance and better handling along with improvements to aesthetics (looks and sound) in a package designed with reliability and safety in mind. This union of power and handling modifications results in a true OEM+ experience - the Dinan Experience. Includes Dinan Exhaust Dinan Intake Dinan Strut Brace Dinan Pedal Covers Dinan Badge Features Smiles per gallon instantly multiplied Guaranteed component compatibility and seamless integration 10% price savings when compared to buying the same components a la carte Maximum gains of +6 HP and +5 lb-ft of torque (Exhaust) Smoother, louder,and sportier sound (Exhaust + X-Pipe) Computer-controlled exhaust valves are retained and limit noise during low-speed driving and open fully during high-load conditions (Exhaust) Deletes resonators between the secondary catalysts and rear muffler for increased volume (X-Pipe) Between 11 and 16.6 pounds lighter than the stock depending on the package(Exhaust + X-Pipe and Strut Brace) Reduced intake restriction for Increased turbo efficiency with greater power potential on modified builds (Intake) More robust and aggressive induction soundtrack (Intake) Improved throttle response (Intake) Increased rigidity for sharper handling and reduced flex (Strut Brace) Elevated and stylish high-performance look to the interior (Pedal Pads) Every Experience Package instantly qualifies for the Fabled Dinan deck lid badge

Show More Show Less

G87 M2 Experience Package

Call In Or Chat For Best Price!

T#:30231246

Part#: G87-M2-E-GBGA

Ships on Sep 9, 2026

Sale - Save 10% $ 5,849.99

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

$ 5,264.96 USD

Add to Wish List

Qty

Sale - Save 10%

$ 5,849.99

This product was last offered at the strikethrough price on
07-31-2026

$ 5,264.96 USD

Add to Wish List

Going beyond its Foundation counterpart, the Dinan Experience packages address not only the engine but also the chassis for a complete solution in the form of a wholly tuned Dinan vehicle. While adding power modifiers is often the go-to path when beginning the modification journey, it does not fully consider what makes the car infinitely more enjoyable in scenarios outside of WOT pulls. With the addition of suspension upgrades integrated alongside the power adders, the vehicle is transformed into something more than just the sum of its parts. It's a comprehensive answer to delivering additional technical capabilities in the form of increased engine performance and better handling along with improvements to aesthetics (looks and sound) in a package designed with reliability and safety in mind. This union of power and handling modifications results in a true OEM+ experience - the Dinan Experience. Includes Dinan Exhaust Dinan Intake Dinan Strut Brace Dinan Pedal Covers Dinan Badge Features Smiles per gallon instantly multiplied Guaranteed component compatibility and seamless integration 10% price savings when compared to buying the same components a la carte Maximum gains of +6 HP and +5 lb-ft of torque (Exhaust) Smoother, louder, and sportier sound (Exhaust + X-Pipe) Computer-controlled exhaust valves are retained and limit noise during low-speed driving and open fully during high-load conditions (Exhaust) Deletes resonators between the secondary catalysts and rear muffler for increased volume (X-Pipe) Between 11 and 16.6 pounds lighter than the stock depending on the package(Exhaust + X-Pipe and Strut Brace) Reduced intake restriction for Increased turbo efficiency with greater power potential on modified builds (Intake) More robust and aggressive induction soundtrack (Intake) Improved throttle response (Intake) Increased rigidity for sharper handling and reduced flex (Strut Brace) Elevated and stylish high-performance look to the interior (Pedal Pads) Every Experience Package instantly qualifies for the Fabled Dinan deck lid badge

Project Cars

SELECT YOUR BMW

BMW Chassis Reinforcement Kits & Parts

Sub-Categories

4mm Heavy Duty Rear Shock Mount Reinforcement Plate Set

Heavy Duty Convertible Rear Shock Mount Reinforcement Plate Set ...

Heavy Duty Rear Sway Bar Bracket Upgrade - E30

MINI R56 ECS Strut Tower Plate Kit - Black

E36, E46, Z3 Rear Shock Mount Reinforcement (Sold Each)

iSweep Power Brace Complete Whole Kit - F55, F56, F57

Active Autowerke Chassis Brace - G2X M340i/M440i

Vargas Billet Ride Height Bracket - Toyota GR Supra (A90/A91) ...

G8X M3 M4 Experience Package

G87 M2 Experience Package

Select Vehicle

Category

Brand

Price

Special Offers

Shipping

Narrow Results