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Audi A4 Performance Parts & Upgrades

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B8/B8.5 A4/S4 Lowering Springs & Installation Kit

ES#4691182 - 047330LA01KT - B8/B8.5 A4/S4 Lowering Springs & Installation Kit - Dramatically improve looks and handling with and average lowering up to 1.6" front and rear. Paired with ECS Tuning Cup Kit Installation Kit. - Assembled By ECS - Audi

Dramatically improve looks and handling with and average lowering up to 1.6" front and rear. Paired with ECS Tuning Cup Kit Installation Kit. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4691182
Mfg#:
047330LA01KT
In Stock
ON SALE!
$652.99

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

$647.68 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Camshaft Pair - 239°/230° (Cast Iron)

ES#4141636 - 1013660 - Performance Camshaft Pair - 239/230 (Cast Iron) - More aggressive cams for higher top end power! - Cat Cams - Audi

More aggressive cams for higher top end power! Engine codes AEB & ATW

Brand:
Cat Cams - Corporate Logo
ES#:
4141636
Mfg#:
1013660
Special Order: No Guaranteed ETA
$640.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Special Active Rear Shock - Priced Each

ES#4698697 - 82451407 - Special Active Rear Shock - Priced Each - Superior handling without compromising ride quality - Koni - Audi

Superior handling without compromising ride quality For vehicles without electronic suspension

Brand:
Koni - Corporate Logo
ES#:
4698697
Mfg#:
82451407
In Stock
38% off MSRP

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

$258.99

This product was last offered at the strikethrough price on
08-03-2026

$159.99 USD
Free Shipping
on orders $49 and up

Burger Motorsports JB4 Tuner W/ Smartphone Wireless Connect Kit

ES#4213365 - jb4-b8-ea888KT - Burger Motorsports JB4 Tuner W/ Smartphone Wireless Connect Kit - Features CAN-Bus connectivity for more advanced tuning gain up to 28whp/50lb-ft on a stock car - Burger Motorsports - Audi

Features CAN-Bus connectivity for more advanced tuning — gain up to 28whp/50lb-ft on a stock car Not for sale or use in the state of California.

Brand:
Burger Motorsports - Corporate Logo
ES#:
4213365
Mfg#:
JB4-B8-EA888KT
Ships in 5 Business Days
$638.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Slotted (Blade) Brake Rotors - Pair (300x12)

ES#3131991 - BSD1535 - Rear Slotted (Blade) Brake Rotors - Pair (300x12) - The Uniquely created blade slot design helps to remove hot gases from the braking zone in a quick and efficient way - EBC - Audi

The Uniquely created blade slot design helps to remove hot gases from the braking zone in a quick and efficient way 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
EBC - Corporate Logo
ES#:
3131991
Mfg#:
BSD1535
In Stock at Vendor
5% off MSRP

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

$335.99

This product was last offered at the strikethrough price on
08-03-2026

$318.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Diverter (Bypass) Valve OEM 710N

ES#4880731 - 034-145-5001 - Diverter (Bypass) Valve OEM 710N - New OEM "710N" bypass valve with reinforced rubber diaphragm for longer use than other plastic valves. - 034Motorsport - Audi Volkswagen

New OEM "710N" bypass valve with reinforced rubber diaphragm for longer use than other plastic valves.

Brand:
034Motorsport - Corporate Logo
ES#:
4880731
Mfg#:
034-145-5001
Ships in 2 Business Days
$91.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Ultimate Shift Kit - Audi B8 A4/A5/S5/S5

ES#2834823 - 004113ECS01KT - Ultimate Shift Kit - Audi B8 A4/A5/S5/S5 - Includes the ECS Adjustable Short Throw Shifter paired with BFI's Heavy Weight SCHWARZ Shift Knob - ECS / BFI - Audi

Includes the ECS Adjustable Short Throw Shifter paired with BFI's Heavy Weight SCHWARZ Shift Knob

Brand:
ECS / BFI
ES#:
2834823
Mfg#:
004113ECS01KT
In Stock
$636.98 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B6 Heavy Duty Shocks & Struts Kit

ES#849 - B6A4BHDC - B6 Heavy Duty Shocks & Struts Kit - A heavy duty upgrade for the performance-minded driver - German-made with the same famous lifetime warranty - Bilstein - Audi

A heavy duty upgrade for the performance-minded driver - German-made with the same famous lifetime warranty 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bilstein - Corporate Logo
ES#:
849
Mfg#:
B6A4BHDC
In Stock
$739.99

This product was last offered at the strikethrough price on
03-21-2026

$636.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B8 Audi A4/A5 2.0T Gen 2 Dynamic+ Performance Software Package

ES#4428701 - 034-103-278 - B8 Audi A4/A5 2.0T Gen 2 Dynamic+ Performance Software Package - Unleash up to 301HP/361TQ by transforming your Audi EA888.2 2.0T with Dynamic+ Tuning - delivering ultimate power, drivability, reliability, and enhanced features! - 034Motorsport - Audi

Unleash up to 301HP/361TQ by transforming your Audi EA888.2 2.0T with Dynamic+ Tuning - delivering ultimate power, drivability, reliability, and enhanced features! For Pre-facelift models with EA888 Gen 2 2.0T.

Brand:
034Motorsport - Corporate Logo
ES#:
4428701
Mfg#:
034-103-278
Ships in 1 Business Day
Starting at $180.00 USD
Customize
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

BFI Complete Replacement Shift Paddles - Audi 4M - Black Anodized

ES#4743091 - 8234-4M-701 - BFI Complete Replacement Shift Paddles - Audi 4M - Black Anodized - Designed for enthusiasts to give both an improved feel and better paddle access across a larger degree of the steering wheel. - Black Forest Industries - Audi

Designed for enthusiasts to give both an improved feel and better paddle access across a larger degree of the steering wheel.

Brand:
Black Forest Industries - Corporate Logo
ES#:
4743091
Mfg#:
8234-4M-701
Ships in 2 Business Days
$314.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Big Brake Kit - stage 1 - Slotted Rotors (345x30)

ES#4522 - B7A4S1FSLT - Front Big Brake Kit - stage 1 - Slotted Rotors (345x30) - Upgrade to the stopping power of the Audi S4. Includes ECS V5 slotted brake rotors. - Assembled By ECS - Audi

Upgrade to the stopping power of the Audi S4. Includes ECS V5 slotted brake rotors. 10X Entries For Our 25th Anniversary Sweepstakes!
Upgrade your B7 A4 factory rotors to larger 345mm S4 rotors - Depending on which factory wheel is used, a

Brand:
Assembled By ECS - Corporate Logo
ES#:
4522
Mfg#:
B7A4S1FSLT
Ships in 5 Business Days
ON SALE!
$685.00

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

$629.96 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

DR Series Wheel Spacers - 8mm (1 Pair) - Version 2

ES#2537950 - 1655572 - DR Series Wheel Spacers - 8mm (1 Pair) - Version 2 - Fine tune your stance and improve handling - H&R - Audi Volkswagen

Fine tune your stance and improve handling 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
Fits front only

Brand:
H&R - Corporate Logo
ES#:
2537950
Mfg#:
1655572
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.

$99.99

This product was last offered at the strikethrough price on
07-01-2026

$89.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

K04 Performance Software (New APR Customers) - With Program Switching (Fully Loaded)

ES#3659524 - dpp20tk04psKT - K04 Performance Software (New APR Customers) - With Program Switching (Fully Loaded) - Required software to properly upgrade to a K04 turbocharger - APR - Audi Volkswagen

Required software to properly upgrade to a K04 turbocharger Call In Or Chat For Best Price! 5X Entries For Our 25th Anniversary Sweepstakes!
This upgrade must be performed at ECS Tuning's facility in Ohio.
This upgrade can only be performed with the car present at our facility.

Brand:
APR - Corporate Logo
ES#:
3659524
Mfg#:
DPP20TK04PSKT
In Stock
ON SALE! SAVE 10%
$699.90

This product was last offered at the strikethrough price on
07-31-2026

$629.91 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

H&R Quick-Safe Stud Conversion Kit

ES#2731486 - Q-SPack45-40 - H&R Quick-Safe Stud Conversion Kit - Set of 20 studs. M14 x 1.5 x 40 - H&R - Audi Volkswagen

Set of 20 studs. M14 x 1.5 x 40 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
H&R - Corporate Logo
ES#:
2731486
Mfg#:
Q-SPACK45-40
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.

$174.95

This product was last offered at the strikethrough price on
08-03-2026

$157.45 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Parts & Upgrades

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