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Audi S4 Performance Parts & Upgrades

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Front Big Brake Kit - Stage 2 - No Pads/Rotors/Brake Fluid

ES#4447704 - 95B615123F2KT - Front Big Brake Kit - Stage 2 - No Pads/Rotors/Brake Fluid - Upgrade your brake system to the 4-piston Brembo Porsche Macan calipers - ECS - Audi

Upgrade your brake system to the 4-piston Brembo Porsche Macan calipers 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4447704
Mfg#:
95B615123F2KT
In Stock
$1088.99

This product was last offered at the strikethrough price on
08-04-2026

$1084.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 Billet Tunnel Brace - Black

ES#3476922 - 023781ECS01-01 - Audi B9 Billet Tunnel Brace - Black - Replace your small and weak stamped brace with heavy-duty billet aluminum! - ECS - Audi

Replace your small and weak stamped brace with heavy-duty billet aluminum! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
3476922
Mfg#:
023781ECS01-01
Ships on Dec 14, 2026
ON SALE! SAVE 20%
$168.99

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

$135.19 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

AirGate Carbon Fiber Intake - With Lid

ES#4043328 - 2660-15032 - AirGate Carbon Fiber Intake - With Lid - Max gains of 16 hp and 3 ft-lbs of torque at the wheels for B9 / 9.5 RS 4 / RS 5 2.9TT (with piggyback tuner) - AWE - Audi

Max gains of 16 hp and 3 ft-lbs of torque at the wheels for B9 / 9.5 RS 4 / RS 5 2.9TT (with piggyback tuner) 2X Entries Into Our F80 M3 Sweepstakes

Brand:
AWE - Corporate Logo
ES#:
4043328
Mfg#:
2660-15032
In Stock
5% off MSRP

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

$1131.99

This product was last offered at the strikethrough price on
10-22-2026

$1075.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Exact-Fit Stainless Steel Brake Lines

ES#3449971 - 024686ECS02 - Rear Exact-Fit Stainless Steel Brake Lines - Rear set of DOT-compliant lines for an improved pedal feel - ECS - Audi Volkswagen

Rear set of DOT-compliant lines for an improved pedal feel 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
3449971
Mfg#:
024686ECS02
In Stock
ON SALE!
$95.99

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

$93.11 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Engine Street Shield Skid Plate Hardware Kit

ES#3493177 - 003251ECS02KT - Engine Street Shield Skid Plate Hardware Kit - Replacement hardware kit for your ECS Engine Street Shield - ECS - Audi

Replacement hardware kit for your ECS Engine Street Shield 10X Entries Into Our F80 M3 Sweepstakes
Fits from the 2013 model year

Brand:
ECS - Corporate Logo
ES#:
3493177
Mfg#:
003251ECS02KT
In Stock
ON SALE! SAVE 20%
$140.53

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

$112.42 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Dynamic+ Braking Package - Stage 1

ES#4879774 - 034-301-0004-DSO - Dynamic+ Braking Package - Stage 1 - The new standard for braking performance upgrades on your B9/B9.5 Audi S4, S5, or SQ5. - 034Motorsport - Audi

The new standard for braking performance upgrades on your B9/B9.5 Audi S4, S5, or SQ5. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4879774
Mfg#:
034-301-0004-DSO
Ships in 2 Business Days
$2127.00 USD
Free Shipping

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.

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

V1 Series Coilover System

ES#3020359 - 10210065 - V1 Series Coilover System - The best balance between sporty driving and comfort - KW Suspension - Audi

The best balance between sporty driving and comfort Fits cabriolet and avant models only.
For avant and convertible models only. Range of lowering is 0.4-1.5" in the front and rear.

Brand:
KW Suspension - Corporate Logo
ES#:
3020359
Mfg#:
10210065
Back Ordered
$2114.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Big Brake Kit - Stage 2 - Slotted Rotors (345x30)

ES#3537755 - 025997ECS0624KT - Front Big Brake Kit - Stage 2 - Slotted Rotors (345x30) - Upgrade your brake system to the 4-piston Brembo Q5 calipers. Features ECS V5 brake rotors. - ECS - Audi

Upgrade your brake system to the 4-piston Brembo Q5 calipers. Features ECS V5 brake rotors. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
3537755
Mfg#:
025997ECS0624KT
Back Ordered
$2247.99

This product was last offered at the strikethrough price on
08-07-2026

$2110.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Front Axle Delete Plug Set - Audi B5/B6/B7 - M16 Thread

ES#4375715 - 012417LA01 - Front Axle Delete Plug Set - Audi B5/B6/B7 - M16 Thread - Easily allows the removal of front axles when converting your B5/B6/B7 to RWD (rear wheel drive) from Quattro - ECS - Audi

Easily allows the removal of front axles when converting your B5/B6/B7 to RWD (rear wheel drive) from Quattro 10X Entries Into Our F80 M3 Sweepstakes
From VIN 8D-1-050001, split is in the 2001 model year

Brand:
ECS - Corporate Logo
ES#:
4375715
Mfg#:
012417LA01
In Stock
ON SALE! SAVE 25%
$133.99

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

$100.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Stainless Steel Bi-Pipe Set - Wrinkle Black

ES#3183538 - 034-108-5001-BLK - Stainless Steel Bi-Pipe Set - Wrinkle Black - Replace your restrictive OEM Audi bipipes with 034Motorsport's High-Flow Bi-pipe Set for the 2.7T! - 034Motorsport - Audi

Replace your restrictive OEM Audi bipipes with 034Motorsport's High-Flow Bi-pipe Set for the 2.7T! 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
3183538
Mfg#:
034-108-5001-BLK
Ships in 2 Business Days
$301.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Supercharger Pulley Installation Kit

ES#3477712 - IEBAVJ4 - Supercharger Pulley Installation Kit - Ease the 3.0T supercharger pulley removal/installation process with this install kit - Integrated Engineering - Audi Volkswagen Porsche

Ease the 3.0T supercharger pulley removal/installation process with this install kit

Brand:
Integrated Engineering - Corporate Logo
ES#:
3477712
Mfg#:
IEBAVJ4
Ships in 1 Business Day
$233.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Unitronic Carbon Intake System - Stock Turbo Inlet

ES#4669283 - UH030-48-INA - Unitronic Carbon Intake System - Stock Turbo Inlet - improved throttle response, seamless integration and perfect fitment while greatly enhancing turbo induction sounds. - Unitronic - Audi

improved throttle response, seamless integration and perfect fitment while greatly enhancing turbo induction sounds.

Brand:
Unitronic - Corporate Logo
ES#:
4669283
Mfg#:
UH030-48-INA
Ships in 5 Business Days
$2085.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Stage 3 Endurance Clutch Kit

ES#3106524 - k70398fsstzKT - Stage 3 Endurance Clutch Kit - Designed for dedicated track cars. Conservatively rated at 480ft/lbs. - South Bend Clutch - Audi

Designed for dedicated track cars. Conservatively rated at 480ft/lbs. Includes single mass flywheel

Brand:
South Bend Clutch - Corporate Logo
ES#:
3106524
Mfg#:
K70398FSSTZKT
Ships in 1 Business Day
$2083.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Front Sway Bar

ES#2020 - 70477 - Performance Front Sway Bar - Upgrade your suspension with an adjustable sway bar. 32mm - H&R - Audi

Upgrade your suspension with an adjustable sway bar. 32mm We Price Match - Give Us A Call or Chat!

Brand:
H&R - Corporate Logo
ES#:
2020
Mfg#:
70477
Ships in 3 Business Days
10% off MSRP

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

$459.00

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

$413.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Parts & Upgrades

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