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Audi S4 Performance Parts & Upgrades

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EMD Auto 15mm Wheel Spacers - Pair (With Bolts)

ES#4430400 - EMD-SPACER-15-66 - EMD Auto 15mm Wheel Spacers - Pair (With Bolts) - Manufactured out of high quality 6061-T6 aluminum, and black anodized for corrosion resistance - 5x112, 66.5 Center Bore - Emmanuele Design - Audi

Manufactured out of high quality 6061-T6 aluminum, and black anodized for corrosion resistance - 5x112, 66.5 Center Bore affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits most aftermarket wheels that use conical seat wheel bolts

Brand:
Emmanuele Design - Corporate Logo
ES#:
4430400
Mfg#:
EMD-SPACER-15-66
Ships in 3 Business Days
$110.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

DR Series Wheel Spacers (Black) - 10mm (1 Pair)

ES#3618484 - 2055668SW - DR Series Wheel Spacers (Black) - 10mm (1 Pair) - Get that stance that you've been craving with these new spacers - H&R - Audi MINI 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!
We Price Match - Give Us A Call or Chat!
Maximum factory hub height of up to 13.5mm. Inside wheel bevel = 5.0 x 45 degrees

Brand:
H&R - Corporate Logo
ES#:
3618484
Mfg#:
2055668SW
In Stock
$109.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Front & Rear Sway Bar Kit

ES#3536876 - 72257 - Performance Front & Rear Sway Bar Kit - Includes front adjustable (32mm) and rear (22mm) adjustable sway bars with required bushings - H&R - Audi

Includes front adjustable (32mm) and rear (22mm) adjustable sway bars with required bushings 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#:
3536876
Mfg#:
72257
Ships in 3 Business Days
$585.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Stage 2 Daily Clutch Kit - With Flywheel

ES#3537134 - k70286hdoKT3 - Stage 2 Daily Clutch Kit - With Flywheel - Designed for the daily-driven, weekend track warrior. Conservatively rated at 350ft/lbs. - South Bend Clutch - Audi

Designed for the daily-driven, weekend track warrior. Conservatively rated at 350ft/lbs. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
South Bend Clutch - Corporate Logo
ES#:
3537134
Mfg#:
K70286HDOKT3
Ships in 1 Business Day
$1755.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Intake System With Inlet

ES#4758920 - UH043-INA - Carbon Fiber Intake System With Inlet - Redefining performance and airflow dynamics with unparalleled precision and style. - Unitronic - Audi

Redefining performance and airflow dynamics with unparalleled precision and style. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Tune is recommend for the best performance

Brand:
Unitronic - Corporate Logo
ES#:
4758920
Mfg#:
UH043-INA
Ships in 5 Business Days
$1745.99 USD
Free Shipping
on orders $49 and up

2.5" Resonated Half Exhaust System

ES#3969343 - SAU044 - 2.5" Resonated Half Exhaust System - 2.5" half-exhaust built to last with 304 stainless steel and quad polished daytona tips - Scorpion - Audi

2.5" half-exhaust built to last with 304 stainless steel and quad polished daytona tips affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Scorpion - Corporate Logo
ES#:
3969343
Mfg#:
SAU044
Ships in 2 Business Days
$1741.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Wheel Spacer & Bolt Kit - 10mm With Conical Seat Bolts

ES#2649763 - 00240302A10KT1 - ECS Wheel Spacer & Bolt Kit - 10mm With Conical 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!

Brand:
ECS - Corporate Logo
ES#:
2649763
Mfg#:
00240302A10KT1
In Stock
ON SALE! SAVE 25%
$144.99

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

$108.74 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Silicone Y-Pipe Hose Pair

ES#2864562 - 034-108-3002 - Silicone Y-Pipe Hose Pair - Reinforced high-temp silicone for long life and abuse resistance - 034Motorsport - Audi

Reinforced high-temp silicone for long life and abuse resistance affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
2864562
Mfg#:
034-108-3002
In Stock
$158.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Density Line Front Sway Bar End Links

ES#4828168 - 034-402-4014 - Density Line Front Sway Bar End Links - Replace your flimsy, imprecise OEM sway bar end links with these performance engineered Density Line Front Sway Bar End Links - 034Motorsport - Audi Volkswagen

Replace your flimsy, imprecise OEM sway bar end links with these performance engineered Density Line Front Sway Bar End Links affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4828168
Mfg#:
034-402-4014
In Stock
$52.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Premium Low-Met OE Equivalent Pad - Front & Rear

ES#5445252 - B9SFRP4KT - Premium Low-Met OE Equivalent Pad - Front & Rear - Quality brake pads from an original equipment supplier - Brembo - Audi

Quality brake pads from an original equipment supplier affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Brembo - Corporate Logo
ES#:
5445252
Mfg#:
B9SFRP4KT
In Stock
$142.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Build Your Own Power Package - Audi B8 S4 3.0T

Go from mild to wild! Select the options you want for your build. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4017055
Mfg#:
B8S4PWRPK
In Stock
ON SALE!
Starting at $0.00 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Might-As-Well-Be-Gated Kit

ES#4419866 - B8029A1 - Might-As-Well-Be-Gated Kit - This combo all but eliminates shifter slop and flex under load. - JXB Performance - Audi

This combo all but eliminates shifter slop and flex under load. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
JXB Performance - Corporate Logo
ES#:
4419866
Mfg#:
B8029A1
In Stock at Vendor
$424.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Lowering Springs

ES#4830683 - CTS-LS-025 - Lowering Springs - 1 lowering on average for front and Rear - CTS - Audi

1″ lowering on average for front and Rear affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CTS - Corporate Logo
ES#:
4830683
Mfg#:
CTS-LS-025
In Stock
ON SALE! SAVE 15%
$249.99

This product was last offered at the strikethrough price on
06-08-2026

$212.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Limited Slip Differential

ES#2836902 - 40309175WK - Limited Slip Differential - Put all your power to the ground! - Wavetrac - Audi Porsche

Put all your power to the ground! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits 0A3 manual transmission models only

Brand:
Wavetrac - Corporate Logo
ES#:
2836902
Mfg#:
40309175WK
Ships in 2 Business Days
$1695.00 USD
Free Shipping

Cat-Back Exhaust System - Resonated

ES#4164713 - B6S4RESONATED - Cat-Back Exhaust System - Resonated - 2.25" stainless steel with your choice of tip style - Milltek Sport - Audi

2.25" stainless steel with your choice of tip style affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Milltek Sport - Corporate Logo
ES#:
4164713
Mfg#:
B6S4RESONATED
Back Ordered
Starting at $1685.99 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet R1 Diverter Valve - Pair

ES#4039652 - dv100001KT - Billet R1 Diverter Valve - Pair - Less maintenance, more boost. Kit includes two valves for twin-turbo applications. - APR - Audi Porsche

Less maintenance, more boost. Kit includes two valves for twin-turbo applications. 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#:
4039652
Mfg#:
DV100001KT
Ships on Jul 24, 2026
Auto Notify
$561.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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