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Audi S4 Performance Parts & Upgrades

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M14 Titanium Wheel Stud Kit - Black - Set Of 20

ES#4487742 - TISTUD20145BLK - M14 Titanium Wheel Stud Kit - Black - Set Of 20 - M14x1.5x75mm with conical nuts - Vargas Turbo Technologies - Audi Volkswagen

M14x1.5x75mm with conical nuts affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Vargas Turbo Technologies - Corporate Logo
ES#:
4487742
Mfg#:
TISTUD20145BLK
Ships in 10 Business Days
$335.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Power Stop Z23 Evolution Sport Front Brake Kit (320mm)

ES#3157882 - K886 - Power Stop Z23 Evolution Sport Front Brake Kit (320mm) - A performance front-wheel brake upgrade featuring drilled & slotted rotors and low-dust carbon-fiber ceramic pads. - Power Stop - Audi

A performance front-wheel brake upgrade featuring drilled & slotted rotors and low-dust carbon-fiber ceramic pads. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Power Stop - Corporate Logo
ES#:
3157882
Mfg#:
K886
Ships in 1 Business Day
$279.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Adjustable Fuel Pressure Regulator

ES#4158836 - 034-106-5015 - Adjustable Fuel Pressure Regulator - Works as a replacement for most Bosch fuel pressure regulators. Adjustable from 3.3-5 BAR - 034Motorsport - Audi Volkswagen

Works as a replacement for most Bosch fuel pressure regulators. Adjustable from 3.3-5 BAR affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4158836
Mfg#:
034-106-5015
In Stock
$129.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

OEM Audi 2.9TT/4.0TT Direct Fuel Injector - Priced Each

ES#5397015 - 06m906036aq - OEM Audi 2.9TT/4.0TT Direct Fuel Injector - Priced Each - Maximum Power on Accompanying Stage 3 Tuning - Genuine Volkswagen Audi - Audi

Maximum Power on Accompanying Stage 3 Tuning affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
5397015
Mfg#:
06M906036AQ
In Stock
$277.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Engine Cover

ES#4381933 - 034-1ZZ-1003 - Carbon Fiber Engine Cover - 034Motorsport's Carbon Fiber Engine Cover for the B8/B8.5 Audi 3.0 TFSI is designed to tastefully complement the factory engine bay with a beautiful carbon fiber weave - 034Motorsport - Audi

034Motorsport's Carbon Fiber Engine Cover for the B8/B8.5 Audi 3.0 TFSI is designed to tastefully complement the factory engine bay with a beautiful carbon fiber weave affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4381933
Mfg#:
034-1ZZ-1003
Ships in 2 Business Days
$416.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Supertech Valve Spring & Titanium Retainer Set

ES#4780587 - 034-201-8022 - Supertech Valve Spring & Titanium Retainer Set - Enhancing the power output of your 3.0T - Supertech - Audi

Enhancing the power output of your 3.0T affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supertech - Corporate Logo
ES#:
4780587
Mfg#:
034-201-8022
Ships in 2 Business Days
$828.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Unitronic Dual Pulley Kit For 3.0TFSI

ES#4821288 - UH018BTA - Unitronic Dual Pulley Kit For 3.0TFSI - Upgrade to the ultimate pulley setup! - Unitronic - Audi Porsche

Upgrade to the ultimate pulley setup! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Unitronic - Corporate Logo
ES#:
4821288
Mfg#:
UH018BTA
Ships in 5 Business Days
$549.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System

ES#1892708 - 16586 - Cat-Back Exhaust System - 2.5" stainless steel with dual 4" polished stainless tips - Magnaflow - Audi

2.5" stainless steel with dual 4" polished stainless tips affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Magnaflow - Corporate Logo
ES#:
1892708
Mfg#:
16586
Back Ordered
$1646.00 USD
This product is lifetime replacement eligible Lifetime Replacement

Clutch Kit - Stage 1

ES#2586444 - SA441 - Clutch Kit - Stage 1 - Features a full faced, steel backed, multi-compound organic lined disc with a torque rating of 430 ft/lbs - Spec Clutches - Audi

Features a full faced, steel backed, multi-compound organic lined disc with a torque rating of 430 ft/lbs affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Recommended to be used with Spec single mass flywheel SA44S

Brand:
Spec Clutches - Corporate Logo
ES#:
2586444
Mfg#:
SA441
Ships in 3 Business Days
$819.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

550cc Fuel Injectors - Set Of Six

ES#2574528 - INJB550KT6 - 550cc Fuel Injectors - Set Of Six - Bosch 550cc EV14 Fuel IOnjectors - Great for stage III 2.7T upgrades. Includes injector plug adapters - Bosch - Audi

Bosch 550cc EV14 Fuel IOnjectors - Great for stage III 2.7T upgrades. Includes injector plug adapters affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
2574528
Mfg#:
INJB550KT6
In Stock
$545.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Exact-Fit Stainless Steel Brake Lines

ES#3469677 - 024921ECS01 - Front Exact-Fit Stainless Steel Brake Lines - Front set of DOT-compliant lines for an improved pedal feel - ECS - Audi

Front set of DOT-compliant lines for an improved pedal feel affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3469677
Mfg#:
024921ECS01
In Stock
ON SALE!
$142.99

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

$135.84 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Big Brake Upgrade Kit - Stage 4 - 2-Piece Rotors (380x34)

ES#3221135 - 003883ecs01ktKT4 - Front Big Brake Upgrade Kit - Stage 4 - 2-Piece Rotors (380x34) - Everything necessary to upgrade your stage-3 RS caliper 365mm kit to the stage-4 380mm kit. - ECS - Audi

Everything necessary to upgrade your stage-3 RS caliper 365mm kit to the stage-4 380mm kit. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For customers with existing 365mm ECS Stage 3 Brake Kit with Audi RS5 Calipers

Brand:
ECS - Corporate Logo
ES#:
3221135
Mfg#:
003883ECS01KTKT4
Ships on Oct 28, 2026
Auto Notify
ON SALE!
$1676.99

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

$1626.68 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Premium Performance Coilover Kit

Ultra lightweight aluminum performance kit. Average lowering of 1.6"-2.5"F 1.3"-2.0"R 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!
Fits Avant models only

Brand:
H&R - Corporate Logo
ES#:
1303511
Mfg#:
39471-2
Ships in 3 Business Days
$1622.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Ultra Low Coilover System - Fixed Damping

ES#627 - 50011-1 - Ultra Low Coilover System - Fixed Damping - Extreme lowering for the extreme enthusiasts - H&R - Audi

Extreme lowering for the extreme enthusiasts 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!
Fits Sedan models only. Height adjustable from 2.0" to 3.0" Front & 2.0" to 3.0" Rear

Brand:
H&R - Corporate Logo
ES#:
627
Mfg#:
50011-1
Ships in 3 Business Days
$1620.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Adjustable Rear Tie Rod Set

ES#4701674 - TRS-005 - Adjustable Rear Tie Rod Set - Enables very precise setting of rear geometry settings. A must-have for track or race use! - Verkline - Audi

Enables very precise setting of rear geometry settings. A must-have for track or race use! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Verkline - Corporate Logo
ES#:
4701674
Mfg#:
TRS-005
Ships in 1 Business Day
$324.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Wheel Spacer & Bolt Kit - 8mm With Black Conical Seat Bolts

ES#2748190 - ECS10612KTWBC1 - ECS Wheel Spacer & Bolt Kit - 8mm With Black 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!
Please measure your hub protrusion to ensure it will still make contact with the center of the wheel. See

Brand:
ECS - Corporate Logo
ES#:
2748190
Mfg#:
ECS10612KTWBC1
In Stock
ON SALE! SAVE 25%
$134.99

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

$101.24 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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