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Audi S4 Performance Parts & Upgrades

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Performance Snub Mount With Bracket

ES#3447962 - 034-509-2009 - Performance Snub Mount With Bracket - Greatly reduces unwanted engine movement w/o excess vibration - 034Motorsport - Audi

Greatly reduces unwanted engine movement w/o excess vibration 2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
034Motorsport - Corporate Logo
ES#:
3447962
Mfg#:
034-509-2009
In Stock
$125.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Grille Accent Set - Audi B9 A4/S4

ES#3420220 - 024314ECS01 - Carbon Fiber Grille Accent Set - Audi B9 A4/S4 - Hand-laid carbon fiber to upgrade your exterior styling - ECS - Audi

Hand-laid carbon fiber to upgrade your exterior styling 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Fits up to 2019 model year with *pre-facelift* front bumpers

Brand:
ECS - Corporate Logo
ES#:
3420220
Mfg#:
024314ECS01
In Stock
ON SALE! SAVE 65%
$576.99

This product was last offered at the strikethrough price on
05-02-2026

$200.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Sport & Sound Cat-Back Exhaust System - Resonated

ES#3514254 - 764440 - Sport & Sound Cat-Back Exhaust System - Resonated - Stainless steel resonated cat-back exhaust system with dual round, polished tips - Supersprint - Audi

Stainless steel resonated cat-back exhaust system with dual round, polished tips Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Supersprint - Corporate Logo
ES#:
3514254
Mfg#:
764440
In Stock
ON SALE! SAVE 67%
$3055.99

This product was last offered at the strikethrough price on
05-02-2026

$1000.00 USD
Free Shipping

Carbon Fiber Rear Valance w/Rear Splitter

ES#3142795 - AS410-CFRVP - Carbon Fiber Rear Valance w/Rear Splitter - Delivers an unmatched combination of aggressiveness and luxury elegance - Deval - Audi

Delivers an unmatched combination of aggressiveness and luxury elegance Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Fits up to the 2012 model year (pre-facelift)

Brand:
Deval - Corporate Logo
ES#:
3142795
Mfg#:
AS410-CFRVP
Special Order: No Guaranteed ETA
$1000.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Inverted-Damper Performance Coilover System - Audi B8/B8.5

ES#4900307 - 026116LA01 - Inverted-Damper Performance Coilover System - Audi B8/B8.5 - Increases rigidity and reduces flex under cornering and braking loads - ECS - Audi

Increases rigidity and reduces flex under cornering and braking loads 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Vehicles equipped with Electronic Damping Control (EDC) will lose shock dampening and receive a system error code with coilover systems.

Brand:
ECS - Corporate Logo
ES#:
4900307
Mfg#:
026116LA01
In Stock
ON SALE! SAVE 23%
$1299.99

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

$999.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

TGK Motorsport Front And Rear Sway Bar Kit

ES#5477703 - TGK-0412-03 - TGK Motorsport Front And Rear Sway Bar Kit - Includes 28MM Front and 25.4MM Rear Sway Bar. - TGK Motorsport - Audi

Includes 28MM Front and 25.4MM Rear Sway Bar. Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
TGK Motorsport - Corporate Logo
ES#:
5477703
Mfg#:
TGK-0412-03
Ships in 6 Business Days
$499.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

APR Valve Spring Kit - Priced Per Spring

ES#4690063 - MS100258 - APR Valve Spring Kit - Priced Per Spring - Lighter, stiffer, and supports higher revving! - APR - Audi Volkswagen

Lighter, stiffer, and supports higher revving! Call In Or Chat For Best Price! Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
APR - Corporate Logo
ES#:
4690063
Mfg#:
MS100258
Ships in 6 Business Days
ON SALE! SAVE 11%
$61.99

This product was last offered at the strikethrough price on
09-28-2026

$55.31 USD
Free Shipping

Front 2-Piece Brake Rotors - Pair

Replace your rotors with 2-piece rotors from Giro Disc. Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Girodisc - Corporate Logo
ES#:
4608925
Mfg#:
A1-130
Ships in 4 Business Days
$995.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Adjustable Rear Sway Bar End Links - Pair

ES#2864590 - 034-402-4005 - Adjustable Rear Sway Bar End Links - Pair - Replace your flimsy, sloppy OEM sway bar end links with these performance engineered adjustable spherical endlinks - 034Motorsport - Audi

Replace your flimsy, sloppy OEM sway bar end links with these performance engineered adjustable spherical endlinks 2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
034Motorsport - Corporate Logo
ES#:
2864590
Mfg#:
034-402-4005
Ships in 3 Business Days
$248.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Brake Kit - Stage 1 - 2-Piece Cross Drilled & Slotted Rotors (345x30)

ES#2730485 - 8K0698301MKT4 - Front Brake Kit - Stage 1 - 2-Piece Cross Drilled & Slotted Rotors (345x30) - Upgrade your brake system with 2-piece rotors and stainless steel lines - ECS - Audi

Upgrade your brake system with 2-piece rotors and stainless steel lines 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
ECS - Corporate Logo
ES#:
2730485
Mfg#:
8K0698301MKT4
Ships on Apr 8, 2027
ON SALE!
$1043.99

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

$991.79 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

DR Series Wheel Spacers (Black) - 10mm (Pair) - Version 2

ES#2731176 - 2055571BSW - DR Series Wheel Spacers (Black) - 10mm (Pair) - Version 2 - Fine tune your stance and improve handling - H&R - Audi Volkswagen

Fine tune your stance and improve handling Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
H&R - Corporate Logo
ES#:
2731176
Mfg#:
2055571BSW
In Stock
10% off MSRP

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

$109.99

This product was last offered at the strikethrough price on
10-01-2026

$98.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Lower Control Arm M12 Hardware Kit For B8/B8.5 Audi A4/S4/RS4, A5/S5/RS5, Q5/SQ5, C7/C7.5 A6/S6/RS6, A7/S7/RS7, & 95B Porsche Macan

ES#4880766 - 034-401-H006 - Lower Control Arm M12 Hardware Kit For B8/B8.5 Audi A4/S4/RS4, A5/S5/RS5, Q5/SQ5, C7/C7.5 A6/S6/RS6, A7/S7/RS7, & 95B Porsche Macan - This hardware kit contains all hardware required to install a lower front control arm kit for early model B8/C7 vehicles with M12 hardware. All hardware is high-quality OEM plated. - 034Motorsport - Audi

This hardware kit contains all hardware required to install a lower front control arm kit for early model B8/C7 vehicles with M12 hardware. All hardware is high-quality OEM plated. 2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
034Motorsport - Corporate Logo
ES#:
4880766
Mfg#:
034-401-H006
Ships in 2 Business Days
$82.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Polyurethane Rear Differential Mount - Black (Track)

ES#4701581 - ELA-10-285 - Polyurethane Rear Differential Mount - Black (Track) - Eliminate excessive rear differential movement! - Verkline - Audi

Eliminate excessive rear differential movement! Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Verkline - Corporate Logo
ES#:
4701581
Mfg#:
ELA-10-285
Ships in 3 Business Days
$325.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Bilstein B12 Pro-Kit Suspension System

ES#2983899 - 46-189769 - Bilstein B12 Pro-Kit Suspension System - Expertly matched performance Eibach Pro-line lowering springs and Bilstein shock/strut package for a dramatic increase in performance handling. World-famous Bilstein quality with a limited lifetime warranty! - Bilstein - Audi

Expertly matched performance Eibach Pro-line lowering springs and Bilstein shock/strut package for a dramatic increase in performance handling. World-famous Bilstein quality with a limited lifetime warranty! 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
2X Entries For Our Spin To Win Sweepstakes!
Vehicles equipped with Electronic Damping Control (EDC) will lose shock dampening and receive a system error code with coilover systems

Brand:
Bilstein - Corporate Logo
ES#:
2983899
Mfg#:
46-189769
Special Order: No Guaranteed ETA
$969.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ST Adjustable Lowering Springs

ES#4045183 - 27310075 - ST Adjustable Lowering Springs - Allows individual ride height adjustment at each corner of your vehicle - Make your stock suspension height adjustable, without compromise! - Suspension Techniques - Audi

Allows individual ride height adjustment at each corner of your vehicle - Make your stock suspension height adjustable, without compromise! Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Fits coupe models - Average lowering of 0.6"-1.8" Front, 0.6"-1.8" Rear

Brand:
Suspension Techniques - Corporate Logo
ES#:
4045183
Mfg#:
27310075
Back Ordered
$969.00 USD
Free Shipping

Special Active Rear Shock - Priced Each

ES#4698697 - 82451407 - Special Active Rear Shock - Priced Each - Superior handling without compromising ride quality - Koni - Audi

Superior handling without compromising ride quality Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
For vehicles without electronic suspension

Brand:
Koni - Corporate Logo
ES#:
4698697
Mfg#:
82451407
Back Ordered
38% off MSRP

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

$258.99

This product was last offered at the strikethrough price on
10-28-2026

$159.99 USD
Free Shipping
on orders $49 and up

More About Performance Parts & Upgrades

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