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Audi A4 Performance Parts & Upgrades

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Camber Correcting Density Line Control Arm Kit - Front

ES#4159576 - 034-401-1055 - Camber Correcting Density Line Control Arm Kit - Front - Includes lower control arms, upper adjustable control arms, M12 ball joints and all necessary hardware. - 034Motorsport - Audi

Includes lower control arms, upper adjustable control arms, M12 ball joints and all necessary hardware. 2X Entries Into Our F80 M3 Sweepstakes
For vehicles with M12 ball joints

Brand:
034Motorsport - Corporate Logo
ES#:
4159576
Mfg#:
034-401-1055
Ships in 2 Business Days
$1306.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

CTS Turbo B8/B8.5 2.0T BOSS 600 Turbo Kit

ES#4017688 - CTS-B8A4-BOSS600 - CTS Turbo B8/B8.5 2.0T BOSS 600 Turbo Kit - A big turbo kit that is truly bolt-on! - This kit replaces the factory turbo and is made to work with most of your installed parts - CTS - Audi

A big turbo kit that is truly bolt-on! - This kit replaces the factory turbo and is made to work with most of your installed parts *Does not include fueling, charge pipe setup, or tuning - Proper software is required*

Brand:
CTS - Corporate Logo
ES#:
4017688
Mfg#:
CTS-B8A4-BOSS600
Ships in 7 Business Days
ON SALE! SAVE 10%
$2899.99

This product was last offered at the strikethrough price on
09-29-2026

$2609.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Diverter Valve Kit

ES#2862878 - CTSDV00023 - Diverter Valve Kit - Direct bolt on without worry of a check-engine light - CTS - Audi Volkswagen

Direct bolt on without worry of a check-engine light

Brand:
CTS - Corporate Logo
ES#:
2862878
Mfg#:
CTSDV00023
Ships in 7 Business Days
ON SALE! SAVE 20%
$249.99

This product was last offered at the strikethrough price on
09-29-2026

$199.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

RSS+ Coilover System - Damping Adjustable Shocks

ES#2718830 - RSS13019-1 - RSS+ Coilover System - Damping Adjustable Shocks - Ultimate motorsport coilover - Average lowering 1.5"-2.7"F 1.4"-2.7"R - H&R - Audi

Ultimate motorsport coilover - Average lowering 1.5"-2.7"F 1.4"-2.7"R We Price Match - Give Us A Call or Chat!
Vehicles equipped with Electronic Damping Control (EDC) will lose shock damping and receive a system error code with coilover systems.

Brand:
H&R - Corporate Logo
ES#:
2718830
Mfg#:
RSS13019-1
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.

$2880.00

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

$2592.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

KW V2 Series Coilover Kit

ES#2092105 - 15210030 - KW V2 Series Coilover Kit - Variant 2 coilovers offer sport handling with adjustable rebound dampening - KW Suspension - Audi

Variant 2 coilovers offer sport handling with adjustable rebound dampening Range of lowering is 1.4-2.5" in the front and 1.4-2.3" in the rear.

Brand:
KW Suspension - Corporate Logo
ES#:
2092105
Mfg#:
15210030
Back Ordered
$2574.00 USD
Free Shipping
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 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
10% off MSRP

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

$109.99

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

$98.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Lightweight Flywheel Kit - Stage 1

ES#2771104 - 003485ECS01AKT - Performance Lightweight Flywheel Kit - Stage 1 - ECS Lightweight Flywheel with the Spec Stage 1 clutch kit rated at 315ft/lbs - ECS - Audi

ECS Lightweight Flywheel with the Spec Stage 1 clutch kit rated at 315ft/lbs 10X Entries Into Our F80 M3 Sweepstakes USE CODE ECS20 IN CART FOR BEST PRICE

From VIN 8K-9-066500, split is in the 2009 model year

Brand:
ECS - Corporate Logo
ES#:
2771104
Mfg#:
003485ECS01AKT
Ships in 10 Business Days
$2567.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

X-Clear Driveshaft Tunnel Brace

ES#4381928 - 034-603-0029 - X-Clear Driveshaft Tunnel Brace - Allows for a larger diameter exhaust to be installed without causing excessive rattling or vibration. - 034Motorsport - Audi

Allows for a larger diameter exhaust to be installed without causing excessive rattling or vibration. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4381928
Mfg#:
034-603-0029
Ships in 2 Business Days
$151.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Rear Subframe Bushing Kit

ES#3178069 - 034-601-0011 - Billet Rear Subframe Bushing Kit - Maintain proper suspension geometry when cornering and reduce rear subframe movement - 034Motorsport - Audi

Maintain proper suspension geometry when cornering and reduce rear subframe movement 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
3178069
Mfg#:
034-601-0011
Ships in 2 Business Days
$285.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cup Kit - H&R Sport Springs With Bilstein Sport Shocks

ES#2739504 - 50361KT - Cup Kit - H&R Sport Springs With Bilstein Sport Shocks - Perfect combination of handling & ride quality - Assembled By ECS - Audi

Perfect combination of handling & ride quality 10X Entries Into Our F80 M3 Sweepstakes USE CODE KIT15 IN CART FOR BEST PRICE
Fits Sedan models only

Brand:
Assembled By ECS - Corporate Logo
ES#:
2739504
Mfg#:
50361KT
Ships in 1 Business Day
$1593.99

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

$1273.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B8 Sport Shocks & Struts Kit

ES#3031021 - 24-119818KT1 - B8 Sport Shocks & Struts Kit - Ideal for use with lowering springs and upgraded sway bars - German-made with the same famous lifetime warranty - Bilstein - Audi

Ideal for use with lowering springs and upgraded sway bars - German-made with the same famous lifetime warranty 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bilstein - Corporate Logo
ES#:
3031021
Mfg#:
24-119818KT1
In Stock
$636.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

RA4 240mm Clutch Conversion Kit - Stage 1

ES#5485 - RA4S1-STEEL - RA4 240mm Clutch Conversion Kit - Stage 1 - ECS RA4 Lightweight Flywheel with the Audi S4 clutch kit - ECS - Audi Volkswagen

ECS RA4 Lightweight Flywheel with the Audi S4 clutch kit 10X Entries Into Our F80 M3 Sweepstakes USE CODE ECS20 IN CART FOR BEST PRICE

Brand:
ECS - Corporate Logo
ES#:
5485
Mfg#:
RA4S1-STEEL
Ships in 3 Business Days
$846.99 USD
Free Shipping
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 USE CODE ECS20 IN CART FOR BEST PRICE
Fits from the 2013 model year

Brand:
ECS - Corporate Logo
ES#:
3493177
Mfg#:
003251ECS02KT
In Stock
$140.53 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Parts & Upgrades

All the performance upgrade options from the best brands in the business to help build your dreams. Our performance parts catalog is the largest anywhere and constantly growing to keep your build on track.

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