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Audi S4 Performance Parts & Upgrades

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ES#5375603 - SSXAU701 - Cat-Back Exhaust System - Non-Resonated (Louder) *Scratch And Dent* - ***S&D NOTE: Only contains two mufflers - Sold As Is - See photos prior to ordering - ALL SALES FINAL*** - Scratch & Dent - Audi

***S&D NOTE: Only contains two mufflers - Sold As Is - See photos prior to ordering - ALL SALES FINAL*** ALL SALES FINAL. ITEMS MAY BE DAMAGED OR MISSING COMPONENTS. PLEASE SEE IMAGES BEFORE PURCHASING. Want To Haggle? Give Us A Call Or Chat To Make An Offer On This Product! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Scratch & Dent - Corporate Logo
ES#:
5375603
Mfg#:
SSXAU701
In Stock
ON SALE! SAVE 13%
$3075.00

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

$2679.99 USD
Scratch and Dent Item

*Scratch And Dent*

ES#4905804 - 034-105-7051 - *Scratch And Dent* - Transform your exhaust note - Scratch & Dent - Audi

Transform your exhaust note ALL SALES FINAL. ITEMS MAY BE DAMAGED OR MISSING COMPONENTS. PLEASE SEE IMAGES BEFORE PURCHASING. Want To Haggle? Give Us A Call Or Chat To Make An Offer On This Product! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Scratch & Dent - Corporate Logo
ES#:
4905804
Mfg#:
034-105-7051
In Stock
ON SALE! SAVE 12%
$430.00

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

$378.40 USD
ES#4630161 - TTE10282 - TTE880 Upgrade Turbocharger - B5 RS4/S4 & C5 A6 2.7T - Designed to put out over 700HP+! - The Turbo Engineers - Audi

Designed to put out over 700HP+! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
The Turbo Engineers - Corporate Logo
ES#:
4630161
Mfg#:
TTE10282
In Stock
$4806.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4376317 - 30T-EA839-1 - Unitronic Performance Software - Stage 1 - Gain up to 69 horsepower and 97 lb-ft of torque on 91 Octane - Unitronic - Audi

Gain up to 69 horsepower and 97 lb-ft of torque on 91 Octane affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
This tune requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next

Brand:
Unitronic - Corporate Logo
ES#:
4376317
Mfg#:
30T-EA839-1
In Stock
$850.00 USD
This product is lifetime replacement eligible Lifetime Replacement
ES#4381904 - 30TFSI-D - Unitronic Performance Software - Flashed @ ECS - Choose the stage that meets your power goals! - Unitronic - Audi

Choose the stage that meets your power goals! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
This tune requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next

Brand:
Unitronic - Corporate Logo
ES#:
4381904
Mfg#:
30TFSI-D
In Stock
Starting at $700.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4389400 - 30TFSI-DSG - Unitronic DSG Performance Software - Flashed @ ECS - Choose the stage that meets your power goals! - Unitronic - Audi

Choose the stage that meets your power goals! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
This tune requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next

Brand:
Unitronic - Corporate Logo
ES#:
4389400
Mfg#:
30TFSI-DSG
In Stock
Starting at $700.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3137980 - 019396ECS04KT6 - LED Trunk Lighting Kit - Red - Illuminate the lighting in your trunk or hatch with new LED bulbs from Ziza - ZiZa - Audi

Illuminate the lighting in your trunk or hatch with new LED bulbs from Ziza affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Avant models only

Brand:
ZiZa - Corporate Logo
ES#:
3137980
Mfg#:
019396ECS04KT6
In Stock
ON SALE! SAVE 10%
$25.99

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

$23.39 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3138033 - 019396ECS05KT3 - LED Vanity Mirror Lighting Kit - Red - See details like never before, with LED bulbs for your vanity mirrors from Ziza. - ZiZa - Audi

See details like never before, with LED bulbs for your vanity mirrors from Ziza. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ZiZa - Corporate Logo
ES#:
3138033
Mfg#:
019396ECS05KT3
In Stock
ON SALE! SAVE 10%
$25.99

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

$23.39 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3137974 - 019396ECS04KT2 - LED Vanity Mirror Lighting Kit - Red - See details like never before, with LED bulbs for your vanity mirrors from Ziza - ZiZa - Audi

See details like never before, with LED bulbs for your vanity mirrors from Ziza affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ZiZa - Corporate Logo
ES#:
3137974
Mfg#:
019396ECS04KT2
In Stock
ON SALE! SAVE 10%
$25.99

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

$23.39 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More Power. More Fun. Plus, a Limited Powertrain Warranty 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!
This upgrade requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the ne

Brand:
APR - Corporate Logo
ES#:
4057385
Mfg#:
DPP30TMG1APRPLUS
In Stock
$1799.00 USD
This product is lifetime replacement eligible Lifetime Replacement
ES#4858190 - 034-106-7026 - Fuel Rail With AAN Brackets - CNC Machined to accept standard EFI type injector O-rings - 034Motorsport - Audi

CNC Machined to accept standard EFI type injector O-rings affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4858190
Mfg#:
034-106-7026
Ships in 2 Business Days
$222.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4842887 - 034-301-0003-NKL - 034Motorsport RS+ Big Brake Package - Nickel Calipers (390x34) - Features lightweight, CNC-machined 8-piston brake calipers with 390x34mm 2-piece rotors, reducing unsprung weight while enhancing brake cooling and longevity. - 034Motorsport - Audi

Features lightweight, CNC-machined 8-piston brake calipers with 390x34mm 2-piece rotors, reducing unsprung weight while enhancing brake cooling and longevity. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4842887
Mfg#:
034-301-0003-NKL
Ships in 2 Business Days
$4563.00 USD
Free Shipping
ES#4842885 - 034-301-0003-RED - 034Motorsport RS+ Big Brake Package - Red Calipers (390x34) - Features lightweight, CNC-machined 8-piston brake calipers with 390x34mm 2-piece rotors, reducing unsprung weight while enhancing brake cooling and longevity. - 034Motorsport - Audi

Features lightweight, CNC-machined 8-piston brake calipers with 390x34mm 2-piece rotors, reducing unsprung weight while enhancing brake cooling and longevity. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4842885
Mfg#:
034-301-0003-RED
Ships in 2 Business Days
$4407.00 USD
Free Shipping
ES#4905876 - 034-301-0011-BLK - Stage 3 Dynamic+ Braking Package Black - Audi B9/B9.5 S4/S5/SQ5 - The new standard for braking performance upgrades on your Audi B9/B9.5 S4/S5/SQ5 - 034Motorsport - Audi

The new standard for braking performance upgrades on your Audi B9/B9.5 S4/S5/SQ5 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4905876
Mfg#:
034-301-0011-BLK
Ships in 2 Business Days
$5438.00 USD
Free Shipping
ES#5444895 - 034-301-0008-BK - 034Motorsport RS+ Big Brake Package - Black - Features massive 8-piston billet calipers and 390mm 2-piece floating rotors to deliver motorsport-grade stopping power and fade-free performance for the street or track. - 034Motorsport - Audi

Features massive 8-piston billet calipers and 390mm 2-piece floating rotors to deliver motorsport-grade stopping power and fade-free performance for the street or track. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
5444895
Mfg#:
034-301-0008-BK
Ships in 2 Business Days
$4315.00 USD
Free Shipping
ES#5374285 - 034-301-2015-BLK - 2-Piece Floating Rear Brake Rotor Upgrade - Black Carriers (370x22) - Reduces rotational weight by 1.6lbs on each corner and increases rotor diameter from 330mm to 370mm! - 034Motorsport - Audi

Reduces rotational weight by 1.6lbs on each corner and increases rotor diameter from 330mm to 370mm! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
5374285
Mfg#:
034-301-2015-BLK
Ships in 2 Business Days
$1128.00 USD
Free Shipping

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