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BMW E46 M3 Suspension Reinforcement Kits

The primary issue with premium suspension upgrades is that these components mount in the same locations as the factory units, and utilize the same control arm designs.

Suspension Reinforcement components are parts that work alongside your upgraded or factory suspension to triangulate suspension geometry more precisely.

The ECS Rear Trailing Arm Bushing Limiter more exactly specifies the range of motion of your trailing arms, while Heavy Duty Rear Shock Mount Reinforcement Plates provide better rear suspension response while eliminating the possibility of rear shock blowout.


Call for Reinforcement

Fits:
BMW E46 M3 (2001-2006)

Suspension Reinforcement Kit
Includes ECS RTAB limiter, rear shock tower reinforcement plates and BMW Strut tower plates.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For coupe models only
Brand: Assembled By ECS - Corporate Logo
ES#: 2718690
Mfg#: 002478ECS01KT

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Availability:
In Stock
On SALE Save 30%
$316.99

This product was last offered at the strikethrough price on
01-03-2026

$221.81 USD
Free Shipping Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
Suspension Reinforcement Kit
Includes ECS RTAB limiter, rear shock tower reinforcement plates and BMW Strut tower plates.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For convertible models only
Brand: Assembled By ECS - Corporate Logo
ES#: 2718691
Mfg#: 002478ECS02KT

Choose how many gift cards you would like below. You can set the denomination in your cart during checkout.

Availability:
In Stock
On SALE Save 30%
$326.99

This product was last offered at the strikethrough price on
01-03-2026

$230.31 USD
Free Shipping Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
Front Upper Strut Mount Reinforcement Plate - Priced Each - E46
Highly recommended upgrade to drastically reduce mushrooming and other strut tower deformation
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Some trimming of reinforcement plate may be required.
Brand: Genuine BMW - Corporate Logo
ES#: 128656
Mfg#: 51717036781

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Availability:
In Stock
$53.99 USD
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on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
OEM M3 Front Strut Tower Brace Kit - (NO LONGER AVAILABLE)
Upgrade your BMW with this strut tower brace kit
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand: Genuine BMW - Corporate Logo
ES#: 2500896
Mfg#: 51717895414KT
No longer available
Heavy Duty Rear Shock Mount Reinforcement Plate Set
Thicker construction (4mm) than Z3 plates with a matte zinc finish. Brawny and beautiful!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes! USE CODE ECS20 IN CART FOR BEST PRICE

For coupe models only
Brand: ECS - Corporate Logo
ES#: 2642687
Mfg#: 002478ECS01KT

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Availability:
In Stock
$85.99 USD
Free Shipping Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
Heavy Duty Rear Shock Mount Reinforcement Plate Set
Finally, a bolt on and go solution for convertible models. No hacking required!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes! USE CODE ECS20 IN CART FOR BEST PRICE

For convertible models only
Brand: ECS - Corporate Logo
ES#: 2642686
Mfg#: 002478ECS02KT

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Availability:
In Stock
$95.98 USD
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This product is lifetime replacement eligible Lifetime Replacement
Rear Shock Mount Reinforcement Plate - Priced Each -
Mounts on top of the rear shock
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For coupe models only
Brand: Genuine BMW - Corporate Logo
ES#: 130271
Mfg#: 51718413359

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Availability:
In Stock
9% off MSRP

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


$73.18
$66.82 USD
Free Shipping Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
Rear Trailing Arm Bushing Limiter Set
Improve handling and extend bushing life - all while maintaining ride quality!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes! USE CODE ECS20 IN CART FOR BEST PRICE

Brand: ECS - Corporate Logo
ES#: 2721244
Mfg#: 003301ECS01AKT

Choose how many gift cards you would like below. You can set the denomination in your cart during checkout.

Availability:
In Stock
$88.99 USD
Free Shipping Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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Manufacturer names and/or part numbers are used only for identification purposes.

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