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Audi S4 Performance Parts & Upgrades

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ST XA Coilover Kit - Adjustable Dampening

ST XTA coilovers offer high performance handling with adjustable rebound dampening. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For models with build date up to 7/11/16, w/ 53mm front strut body

Brand:
Suspension Techniques - Corporate Logo
ES#:
4389619
Mfg#:
182100BH
Back Ordered
$1399.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Big Brake Kit - Stage 2 - No Rotors

ES#2952354 - 8R0615108EKT3 - Front Big Brake Kit - Stage 2 - No Rotors - Upgrade your brake system to the 4-piston Brembo Q5 calipers - ECS - Audi

Upgrade your brake system to the 4-piston Brembo Q5 calipers affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2952354
Mfg#:
8R0615108EKT3
Ships in 1-2 days
$1398.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

DS Series Coilover Suspension Kit

ES#3521687 - S-02-DS - DS Series Coilover Suspension Kit - Featuring 30 levels of adjustment and increased damping force at low speed piston velocities - BC Racing - Audi

Featuring 30 levels of adjustment and increased damping force at low speed piston velocities affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits both sedan and avant models

Brand:
BC Racing - Corporate Logo
ES#:
3521687
Mfg#:
S-02-DS
Back Ordered
$1395.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Carbonio Replacement Filter Element

ES#2592687 - RF100003 - Carbonio Replacement Filter Element - Replacement air filter for APR Carbonio intake systems - APR - Audi

Replacement air filter for APR Carbonio intake systems 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!
CARB certified for sale in all 50 states

Brand:
APR - Corporate Logo
ES#:
2592687
Mfg#:
RF100003
EO#:
d-783-2
In Stock
12% off MSRP

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

$92.99

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

$81.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Performance Air Ride Kit

ES#3974224 - 78570 - Front Performance Air Ride Kit - Allow your B9 Audi to sit on the ground! - Air Lift - Audi

Allow your B9 Audi to sit on the ground! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with 53mm front lower mounts

Brand:
Air Lift - Corporate Logo
ES#:
3974224
Mfg#:
78570
In Stock at Vendor
$1386.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Performance Air Ride Kit

ES#2626357 - 75658 - Rear Performance Air Ride Kit - Allow your B8 Audi to sit on the ground! - Air Lift - Audi

Allow your B8 Audi to sit on the ground! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Air Lift - Corporate Logo
ES#:
2626357
Mfg#:
75658
In Stock at Vendor
$1386.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

DRA Series Wheel Spacers - 30mm (1 Pair)

ES#378 - 60556651 - DRA Series Wheel Spacers - 30mm (1 Pair) - H&R 30 mm spacers attach with supplied bolts, uses existing bolts to attach wheel to spacers. Bolts to the hub - H&R - Audi Mercedes Benz Porsche

H&R 30 mm spacers attach with supplied bolts, uses existing bolts to attach wheel to spacers. Bolts to the hub affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
H&R - Corporate Logo
ES#:
378
Mfg#:
60556651
In Stock
$197.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Sway Bar - 24mm

ES#1876408 - 71361 - Rear Sway Bar - 24mm - Non-adjustable - H&R - Audi

Non-adjustable affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
H&R - Corporate Logo
ES#:
1876408
Mfg#:
71361
In Stock
Limited Qty Sale
$300.00

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

$274.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Front Mount Intercooler

ES#3980512 - FMINT12 - Performance Front Mount Intercooler - Offering a huge 128% increase in frontal area and matching increase in internal volume - Forge - Audi

Offering a huge 128% increase in frontal area and matching increase in internal volume affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Forge - Corporate Logo
ES#:
3980512
Mfg#:
FMINT12
Ships in 3 Business Days
$1372.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Twin Disc Organic Clutch Kit

Capable of approximately 1110NM (811FT LBS)! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
The Turbo Engineers - Corporate Logo
ES#:
4766233
Mfg#:
TTE10596
Ships on Jul 8, 2026
$1371.99 USD
Free Shipping
on orders $49 and up

Stainless Braided Brake Line Kit

ES#3432300 - 034-303-0008 - Stainless Braided Brake Line Kit - Replace your stock rubber brake hoses with these performance-minded stainless steel braided lines - 034Motorsport - Audi

Replace your stock rubber brake hoses with these performance-minded stainless steel braided lines affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
3432300
Mfg#:
034-303-0008
In Stock
$152.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B8/C7 Center Differential And Axle Plug Delete Kit

ES#4508908 - 012535laKT - B8/C7 Center Differential And Axle Plug Delete Kit - A 100% reversible Quattro to RWD kit. - ECS - Audi

A 100% reversible Quattro to RWD kit. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Please make sure via VIN that your Center Diff part number is 0B2 409 755 L

Brand:
ECS - Corporate Logo
ES#:
4508908
Mfg#:
012535LAKT
Ships in 9 Business Days
Auto Notify
ON SALE! SAVE 20%
$569.98

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

$455.98 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Density Line Upper Control Arm Kit - Track Spec

ES#3546574 - 034-401-1062 - Density Line Upper Control Arm Kit - Track Spec - Gain negative camber for increased cornering grip, better turn-in, and improved handling! - 034Motorsport - Audi

Gain negative camber for increased cornering grip, better turn-in, and improved handling! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
3546574
Mfg#:
034-401-1062
Back Ordered
$680.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Wheel Spacer & Bolt Kit - 20mm With Ball Seat Bolts

ES#250729 - ECS10159KTWB - ECS Wheel Spacer & Bolt Kit - 20mm With Ball Seat Bolts - Includes everything you need to install spacers on two wheels - ECS - Audi Volkswagen

Includes everything you need to install spacers on two wheels affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Fits OEM wheels or wheels that require ball seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
250729
Mfg#:
ECS10159KTWB
In Stock
ON SALE! SAVE 15%
$199.99

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

$169.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Stainless Brake Line Kit, Porsche Cayenne (Brembo 6-piston)

ES#4045848 - 001-CLR-PAIR - Front Stainless Brake Line Kit, Porsche Cayenne (Brembo 6-piston) - Fits both the 350mm and the 330mm Cayenne front calipers. - JH Motorsports - Audi

Fits both the 350mm and the 330mm Cayenne front calipers. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Porsche Cayenne Calipers (6-piston Brembo) retrofits only

Brand:
JH Motorsports - Corporate Logo
ES#:
4045848
Mfg#:
001-CLR-PAIR
In Stock
$79.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Wheel Spacers - 3mm (Pair)

ES#250682 - 002403ECS01A03KT - ECS Wheel Spacers - 3mm (Pair) - Exclusively built for your 57.1mm centerbore VW/Audi - ECS - Audi Volkswagen

Exclusively built for your 57.1mm centerbore VW/Audi affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Please measure your hub protrusion to ensure it will still make contact with the center of the wheel. See

Brand:
ECS - Corporate Logo
ES#:
250682
Mfg#:
002403ECS01A03KT
In Stock
ON SALE! SAVE 25%
$85.99

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

$64.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Parts & Upgrades

All the performance upgrade options from the best brands in the business to help build your dreams. Our performance parts catalog is the largest anywhere and constantly growing to keep your build on track.

Let us help you find the parts that fit your Audi

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