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Audi B8/B8.5 S4 Quattro 3.0T

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Audi B8/B8.5 S4 Quattro 3.0T Subframe Parts

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Billet X-Brace - Red - Audi B8.5/Porsche Macan

ES#4220369 - 004802LA01AKT2 - Billet X-Brace - Red - Audi B8.5/Porsche Macan - Improve steering feel and handling! - ECS - Audi Porsche

Improve steering feel and handling! 10X Entries For Our 25th Anniversary Sweepstakes!

Fits Facelift models from the 2013 model year

Brand:
ECS - Corporate Logo
ES#:
4220369
Mfg#:
004802LA01AKT2
In Stock
ON SALE! SAVE 25%
$483.99

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

$362.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet X-Brace - Black - Audi B8.5/Porsche Macan

ES#4220368 - 004802la01aKT - Billet X-Brace - Black - Audi B8.5/Porsche Macan - Improve steering feel and handling! - ECS - Audi Porsche

Improve steering feel and handling! 10X Entries For Our 25th Anniversary Sweepstakes!

Fits Facelift models from the 2013 model year.

Brand:
ECS - Corporate Logo
ES#:
4220368
Mfg#:
004802LA01AKT
Ships on Oct 29, 2026
Auto Notify
ON SALE! SAVE 25%
$560.99

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

$420.74 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet X-Brace - Black - Audi B8

ES#4220370 - 004802la01aKT3 - Billet X-Brace - Black - Audi B8 - Improve steering feel and handling! - ECS - Audi

Improve steering feel and handling! 10X Entries For Our 25th Anniversary Sweepstakes!

Fits Pre-Facelift models up to the 2012 model year

Brand:
ECS - Corporate Logo
ES#:
4220370
Mfg#:
004802LA01AKT3
Ships on Oct 29, 2026
Auto Notify
ON SALE! SAVE 25%
$483.99

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

$362.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet X-Brace - Red - Audi B8

ES#4220371 - 004802LA01AKT4 - Billet X-Brace - Red - Audi B8 - Improve steering feel and handling! - ECS - Audi

Improve steering feel and handling! 10X Entries For Our 25th Anniversary Sweepstakes!

Fits Pre-Facelift models up to the 2012 model year

Brand:
ECS - Corporate Logo
ES#:
4220371
Mfg#:
004802LA01AKT4
In Stock
ON SALE! SAVE 25%
$483.99

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

$362.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

X-Brace Billet Aluminum Chassis Reinforcement

ES#2951399 - 034-603-0008 - X-Brace Billet Aluminum Chassis Reinforcement - Increase torsional rigidity for improved steering feel and handling performance - 034Motorsport - Audi

Increase torsional rigidity for improved steering feel and handling performance

Brand:
034Motorsport - Corporate Logo
ES#:
2951399
Mfg#:
034-603-0008
Ships in 2 Business Days
ON SALE! SAVE 10%
$752.00

This product was last offered at the strikethrough price on
08-17-2026

$676.80 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Aluminum Rear Subframe Mount Insert Kit

ES#3168418 - 034-601-0035 - Billet Aluminum Rear Subframe Mount Insert Kit - Tighten your ride back up with this billet insert kit from 034 Motorsports - 034Motorsport - Audi

Tighten your ride back up with this billet insert kit from 034 Motorsports

Brand:
034Motorsport - Corporate Logo
ES#:
3168418
Mfg#:
034-601-0035
In Stock
ON SALE! SAVE 10%
$168.00

This product was last offered at the strikethrough price on
08-17-2026

$151.20 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

X-Brace Stretch Bolt Subframe Hardware Kit

ES#3971172 - 034-603-Z006 - X-Brace Stretch Bolt Subframe Hardware Kit - Complete factory subframe bolt kit for the B8.5 (Facelift) Audi A4/S4, A5/S5, and Q5. - 034Motorsport - Audi

Complete factory subframe bolt kit for the B8.5 (Facelift) Audi A4/S4, A5/S5, and Q5.

Brand:
034Motorsport - Corporate Logo
ES#:
3971172
Mfg#:
034-603-Z006
In Stock
ON SALE! SAVE 10%
$36.00

This product was last offered at the strikethrough price on
08-17-2026

$32.40 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Hex Bolt - Priced Each

ES#2707374 - WHT004756A - Hex Bolt - Priced Each - Install new hardware with your new parts. M12x1.5x145x90 - Genuine Volkswagen Audi - Audi

Install new hardware with your new parts. M12x1.5x145x90 Secures the rear subframe to the vehicle

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2707374
Mfg#:
WHT004756A
In Stock
3% off MSRP

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

$28.18

This product was last offered at the strikethrough price on
08-20-2026

$27.23 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hex Bolt - Priced Each

ES#2773988 - WHT005657 - Hex Bolt - Priced Each - Install new hardware with your new parts. M12x1.5x100 - Genuine Volkswagen Audi - Audi

Install new hardware with your new parts. M12x1.5x100

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2773988
Mfg#:
WHT005657
Ships in 1 day
$10.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

strut brace securing bolt - priced each

ES#2540096 - WHT005372 - strut brace securing bolt - priced each - Secures the transmission strut brace to the vehicle. M12x1.5x51 - Genuine Volkswagen Audi - Audi

Secures the transmission strut brace to the vehicle. M12x1.5x51

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2540096
Mfg#:
WHT005372
In Stock
$5.44 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hex Bolt - Priced Each

ES#468875 - N10711001 - Hex Bolt - Priced Each - Install new hardware with your new parts. M10x110x90 - Genuine Volkswagen Audi - Audi

Install new hardware with your new parts. M10x110x90

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
468875
Mfg#:
N10711001
In Stock
18% off MSRP

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

$13.60

This product was last offered at the strikethrough price on
08-20-2026

$11.20 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

CTS Turbo Rear Subframe Insert Set

ES#5435531 - HW-559 - CTS Turbo Rear Subframe Insert Set - Lock down the rear end of your B8 S4, S5, Q5, or SQ5 and eliminate subframe deflection with CTS Turbos billet aluminum insert set, delivering sharper handling and direct power transfer with minimal NVH. - CTS - Audi

Lock down the rear end of your B8 S4, S5, Q5, or SQ5 and eliminate subframe deflection with CTS Turbo’s billet aluminum insert set, delivering sharper handling and direct power transfer with minimal NVH.

Brand:
CTS - Corporate Logo
ES#:
5435531
Mfg#:
HW-559
Ships in 7 Business Days
$149.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

TGK Motorsport Rear Subframe Mount Billet Insert Kit

Precision-machined billet aluminum rear subframe inserts that eliminate unwanted chassis flex and sharpen the handling of your B8 or C7 platform Audi.

Brand:
TGK Motorsport - Corporate Logo
ES#:
5477658
Mfg#:
TGK-0404-01
Ships in 5 Business Days
$159.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Subframe Front Bushing Inserts - Street

ES#4871828 - PFR3-735 - Rear Subframe Front Bushing Inserts - Street - Improves handling and control, upgrade to a more engaging driving experience. - Powerflex - Audi

Improves handling and control, upgrade to a more engaging driving experience.

Brand:
Powerflex - Corporate Logo
ES#:
4871828
Mfg#:
PFR3-735
Ships in 1 Business Day
ON SALE! SAVE 15%
$76.99

This product was last offered at the strikethrough price on
08-14-2026

$65.44 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Subframe Rear Bushing Inserts - Street

ES#4871829 - PFR3-737 - Rear Subframe Rear Bushing Inserts - Street - Improves handling and control, upgrade to a more engaging driving experience. - Powerflex - Audi

Improves handling and control, upgrade to a more engaging driving experience.

Brand:
Powerflex - Corporate Logo
ES#:
4871829
Mfg#:
PFR3-737
Ships in 1 Business Day
ON SALE! SAVE 15%
$76.99

This product was last offered at the strikethrough price on
08-14-2026

$65.44 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

TGK Motorsport Rear Subframe Mount Billet Insert Kit

Sharpen handling and lock down your Audi D4's chassis by eliminating rear-end slop with this premium billet aluminum subframe insert kit.

Brand:
TGK Motorsport - Corporate Logo
ES#:
5477661
Mfg#:
TGK-0404-04
Ships in 5 Business Days
$159.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Subframe Parts

Subframes are the foundation that supports both driveline and suspension components. We have complete subframes to repair both collision and corrosion damage, plus related bushings, brackets, and mounting hardware.

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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