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Audi S4 Performance Parts & Upgrades

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ES#2975802 - DPP-DL501-40TKT - APR DL501 S-Tronic TCU Software Upgrade - Enhanced launch control, optimized shift points, and much more! - APR - Audi

Enhanced launch control, optimized shift points, and much more! Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
*For models with 7-Speed S-Tronic (DL501) Transmission* This upgrade requires the vehicle to be dropped o

Brand:
APR - Corporate Logo
ES#:
2975802
Mfg#:
DPP-DL501-40TKT
In Stock
$499.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#5435526 - SUS-0011R - CTS Turbo Rear Sway Bar Upgrade - Transform your B9/B9.5 Audi's handling and crush body roll with CTS Turbo's solid 22.5mm rear sway bar, featuring two-way adjustability up to 214% stiffer than stock. - CTS - Audi

Transform your B9/B9.5 Audi's handling and crush body roll with CTS Turbo's solid 22.5mm rear sway bar, featuring two-way adjustability up to 214% stiffer than stock. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CTS - Corporate Logo
ES#:
5435526
Mfg#:
SUS-0011R
Ships in 7 Business Days
$249.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#5435760 - 40595666 - DRA Series Trak Spacers - 20mm (1 Pair) - Get that stance that you've been craving with these new spacers - H&R - Audi BMW Porsche

Get that stance that you've been craving with these new spacers affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
H&R - Corporate Logo
ES#:
5435760
Mfg#:
40595666
Ships in 3 Business Days
$249.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Get up to +55 hp and +43 lb-ft through a safe and easy to use app-controlled tuning module from RaceChip affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Race Chip - Corporate Logo
ES#:
4339358
Mfg#:
917362
Ships in 3 Business Days
$499.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3691238 - FMCT4  - Forge Oil Catch Tank  - Captures harmful contaminants, including oil deposits, unused fuel vapors, and moisture, before they make their way back through to the inlet of the engine. - Forge - Audi

Captures harmful contaminants, including oil deposits, unused fuel vapors, and moisture, before they make their way back through to the inlet of the engine. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Forge - Corporate Logo
ES#:
3691238
Mfg#:
FMCT4
Ships in 3 Business Days
$494.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3706488 - 30006 - Front & Rear G-Stop Stainless Steel Brake Line Kit - Set of DOT-compliant lines for an improved pedal feel - Goodridge - Audi

Set of DOT-compliant lines for an improved pedal feel affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Goodridge - Corporate Logo
ES#:
3706488
Mfg#:
30006
Back Ordered
$164.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2973093 - 034-306-0001 - Rear Big Brake Upgrade (300x22) - Upgrade to 300mm rear brake rotors from the B6/B7 S4 models. - 034Motorsport - Audi

Upgrade to 300mm rear brake rotors from the B6/B7 S4 models. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Does not include rotors - To be used with 300x22 rear rotors from the B6/B7 S4 models

Brand:
034Motorsport - Corporate Logo
ES#:
2973093
Mfg#:
034-306-0001
Ships on Jul 14, 2026
$247.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4042998 - EMD-SPACER-20571 - EMD Wheel Spacers - 20mm (Pair) - Exclusively built for your 57.1mm centerbore VW/Audi - Emmanuele Design - Audi Volkswagen

Exclusively built for your 57.1mm centerbore VW/Audi affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Emmanuele Design - Corporate Logo
ES#:
4042998
Mfg#:
EMD-SPACER-20571
In Stock at Vendor
$70.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3570120 - MS100165 - Wheel Spacer Kit - 8mm (1 Pair)  - 8mm spacers to perfectly dial in your stance or clear your big brake kit! - APR - Audi

8mm spacers to perfectly dial in your stance or clear your big brake kit! Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
APR - Corporate Logo
ES#:
3570120
Mfg#:
MS100165
Ships in 2 Business Days
11% 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
06-20-2026

$97.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4305159 - PFF3-220 - Performance Snub Mount - Street  - Put your power to the ground! - Powerflex - Audi Volkswagen

Put your power to the ground! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Powerflex - Corporate Logo
ES#:
4305159
Mfg#:
PFF3-220
Ships in 1 Business Day
$34.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4031307 - DP22277  - Front Greenstuff Performance Brake Pad Set - Designed as a mildly upgraded pad, great for an afternoon of sporty driving. - EBC - Audi

Designed as a mildly upgraded pad, great for an afternoon of sporty driving. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
EBC - Corporate Logo
ES#:
4031307
Mfg#:
DP22277
Ships in 2 Business Days
$161.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2568317 - 6-ECS-024 -  Wheel Spacer & Bolt Kit - 20mm With Conical Seat Bolts - Complete kit for two wheels, comes with everything you need to install spacers on your aftermarket wheels - ECS - Audi

Complete kit for two wheels, comes with everything you need to install spacers on your aftermarket wheels affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Fits most aftermarket wheels that use conical seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2568317
Mfg#:
6-ECS-024
Ships in 9 Business Days
ON SALE! SAVE 10%
$179.99

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

$161.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2568314 - 6-ECS-018 -  Wheel Spacer & Bolt Kit - 8mm With Conical Seat Bolts - Complete kit for two wheels, comes with everything you need to install spacers on your aftermarket wheels - ECS - Audi

Complete kit for two wheels, comes with everything you need to install spacers on your aftermarket wheels affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Fits most aftermarket wheels that use conical seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2568314
Mfg#:
6-ECS-018
In Stock
ON SALE! SAVE 10%
$134.99

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

$121.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2651028 - PFR3-205Bx2 -  Rear Lower Control Arm Bushing Set - Front Position - Race - Improves handling and control - Upgrade to a more engaging driving experience - Powerflex Black Series - Audi

Improves handling and control - Upgrade to a more engaging driving experience affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Powerflex Black Series - Corporate Logo
ES#:
2651028
Mfg#:
PFR3-205BX2
In Stock
$68.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2966730 - 034-112-6013 - Silicone Inlet Hose - Upgraded silicone hose from the MAF sensor to the throttle body - 034Motorsport - Audi

Upgraded silicone hose from the MAF sensor to the throttle body affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
2966730
Mfg#:
034-112-6013
In Stock
$120.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2071362 - GD1571 - Front GD Sport Slotted & Dimpled Brake Rotors - Pair (345x30) - Upgrade to a slotted / dimpled rotor for improved braking - EBC - Audi

Upgrade to a slotted / dimpled rotor for improved braking affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
EBC - Corporate Logo
ES#:
2071362
Mfg#:
GD1571
Ships in 1 Business Day
5% off MSRP

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

$505.99

This product was last offered at the strikethrough price on
06-20-2026

$479.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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