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Audi A4 Performance Parts & Upgrades

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Super Sport Springs - Set

ES#1303564 - 50361-77 - Super Sport Springs - Set - Aggressive looks and ultimate handling. Average lowering of 2.0"F 2.0"R - H&R - Audi

Aggressive looks and ultimate handling. Average lowering of 2.0"F 2.0"R 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
Sedan models only

Brand:
H&R - Corporate Logo
ES#:
1303564
Mfg#:
50361-77
In Stock
15% off MSRP

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

$439.00

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

$373.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

3" High Flow Catalytic Converter

ES#2972519 - EXH-TDP-004-B8HF - 3" High Flow Catalytic Converter - Designed to seamlessly fit in place of factory catalytic converter - CTS - Audi

Designed to seamlessly fit in place of factory catalytic converter

Brand:
CTS - Corporate Logo
ES#:
2972519
Mfg#:
EXH-TDP-004-B8HF
Back Ordered
Auto Notify
ON SALE! SAVE 10%
$299.99

This product was last offered at the strikethrough price on
07-10-2026

$269.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4/S4/A5 Engine Street Shield Aluminum Skid Plate

ES#3411957 - 019207ecs01KT - Audi B9 A4/S4/A5 Engine Street Shield Aluminum Skid Plate - Protect your vehicle's plastic oil pan with this 4mm thick aluminum skid plate - ECS - Audi

Protect your vehicle's plastic oil pan with this 4mm thick aluminum skid plate 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3411957
Mfg#:
019207ECS01KT
In Stock
$391.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Sport Springs - Set

ES#3187941 - 50357 - Sport Springs - Set - Finally, A performance lowering spring for your B9 chassis Audi - Offering unrivaled comfort and performance - H&R - Audi

Finally, A performance lowering spring for your B9 chassis Audi - Offering unrivaled comfort and performance 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
Average lowering of .80" front and rear for models with factory sport suspension. Average lowering of 1.6" front and rear for models without factory sport suspension

Brand:
H&R - Corporate Logo
ES#:
3187941
Mfg#:
50357
In Stock
15% off MSRP

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

$489.00

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

$415.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8 S4 / A4 S-Line Rear Diffuser - Gloss Black

ES#4033487 - 028808ECS01 - Audi B8 S4 / A4 S-Line Rear Diffuser - Gloss Black - Add some aggressive styling to your Audi! - ECS - Audi

Add some aggressive styling to your Audi! 10X Entries For Our 25th Anniversary Sweepstakes!

Fits pre-facelift B8 S-Line models with quad tips only

Brand:
ECS - Corporate Logo
ES#:
4033487
Mfg#:
028808ECS01
In Stock
ON SALE! SAVE 25%
$420.99

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

$315.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Density Line Front Upper Control Arm Kit

ES#3199968 - 034-401-1042 - Density Line Front Upper Control Arm Kit - Refresh your front end with 034Motorsport's front upper control arm kit - 034Motorsport - Audi Porsche

Refresh your front end with 034Motorsport's front upper control arm kit

Brand:
034Motorsport - Corporate Logo
ES#:
3199968
Mfg#:
034-401-1042
In Stock
$337.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Intake Manifold - Black Velocity Stack Cover

ES#2834698 - IEIMVC1-bk - Intake Manifold - Black Velocity Stack Cover - Does not include installation hardware - Integrated Engineering - Audi Volkswagen

Does not include installation hardware 5X Entries For Our 25th Anniversary Sweepstakes!
Please ensure your ECU tuner can provide you with manifold software before purchasing.
Does not fit 2.0T TSI engines with 5th injector factory aluminum intake manifolds.

Brand:
Integrated Engineering - Corporate Logo
ES#:
2834698
Mfg#:
IEIMVC1-BK
In Stock
$979.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

IE FDS Front Mount Intercooler Kit (IETPCG1)

ES#3192994 - IETPCG1 - IE FDS Front Mount Intercooler Kit (IETPCG1) - Increase horsepower and eliminate heatsoak - Drop-in intercooler requires no cutting, trimming, or mods! - Integrated Engineering - Audi

Increase horsepower and eliminate heatsoak - Drop-in intercooler requires no cutting, trimming, or mods! 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
3192994
Mfg#:
IETPCG1
In Stock
$989.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Sport Springs - Set

ES#251841 - 50361 - Sport Springs - Set - Unrivaled comfort and performance. Average lowering of 1.5"F 1.5"R - H&R - Audi

Unrivaled comfort and performance. Average lowering of 1.5"F 1.5"R 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
Sedan models only

Brand:
H&R - Corporate Logo
ES#:
251841
Mfg#:
50361
In Stock
15% off MSRP

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

$439.00

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

$373.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear V5 Drilled & Slotted Brake Rotors - Set (330x22)

ES#4668331 - 4H0615601Q-XS - Rear V5 Drilled & Slotted Brake Rotors - Set (330x22) - Precision manufactured for consistent stopping power during high performance driving. Featuring a matte black zinc coating for corrosion protection. - ECS - Audi

Precision manufactured for consistent stopping power during high performance driving. Featuring a matte black zinc coating for corrosion protection. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4668331
Mfg#:
4H0615601Q-XS
In Stock
ON SALE!
$302.99

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

$293.90 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

VW/Audi Atmospheric Diverter Valve Spacer - Black

ES#3551289 - 025254ECS01-01 - VW/Audi Atmospheric Diverter Valve Spacer - Black - Let your turbo blow off some air for an exhilarating driving experience! - ECS - Audi Volkswagen

Let your turbo blow off some air for an exhilarating driving experience! 10X Entries For Our 25th Anniversary Sweepstakes!

Fits models with OEM DV part numbers 06H145710J, 06H145710C, 06H145710E. Please verify before ordering.

Brand:
ECS - Corporate Logo
ES#:
3551289
Mfg#:
025254ECS01-01
In Stock
ON SALE! SAVE 25%
$86.99

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

$65.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Stage 2 IE Performance ECU Tune With POWERlink Cable

ES#3579479 - iesocgt2 - Stage 2 IE Performance ECU Tune With POWERlink Cable - Average gain of 83 horsepower and 82 lb-ft of torque on 91 Octane - Integrated Engineering - Audi

Average gain of 83 horsepower and 82 lb-ft of torque on 91 Octane 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
3579479
Mfg#:
IESOCGT2
In Stock
$678.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Forged I-Beam Tuscan Connecting Rods - Rifle Drilled

ES#2794552 - IERTVT1 - Forged I-Beam Tuscan Connecting Rods - Rifle Drilled - Set of 4 connecting rods, to be paired with 22mm wrist pin aftermarket pistons (JE, Wiseco, Mahle ETC) - Integrated Engineering - Audi Volkswagen

Set of 4 connecting rods, to be paired with 22mm wrist pin aftermarket pistons (JE, Wiseco, Mahle ETC) 5X Entries For Our 25th Anniversary Sweepstakes!

To be used with aftermarket pistons with 22mm wrist pin

Brand:
Integrated Engineering - Corporate Logo
ES#:
2794552
Mfg#:
IERTVT1
In Stock
$749.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8.5 S4 / A4 S-Line Facelift Front Lip - Splitter Style - Gloss Black

ES#4158342 - 025864ecs01aKT - Audi B8.5 S4 / A4 S-Line Facelift Front Lip - Splitter Style - Gloss Black - Upgrade your exterior styling! - ECS - Audi

Upgrade your exterior styling! 10X Entries For Our 25th Anniversary Sweepstakes!

For S-Line models from the 2013 model year (Facelift)

Brand:
ECS - Corporate Logo
ES#:
4158342
Mfg#:
025864ECS01AKT
In Stock
ON SALE! SAVE 25%
$359.99

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

$269.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

High Pressure Fuel Pump Piston Upgrade Kit

ES#4499603 - 034-106-6051 - High Pressure Fuel Pump Piston Upgrade Kit - Unlock up to 50% more flow over the factory high pressure fuel pump - 034Motorsport - Audi Volkswagen

Unlock up to 50% more flow over the factory high pressure fuel pump

Brand:
034Motorsport - Corporate Logo
ES#:
4499603
Mfg#:
034-106-6051
In Stock
$337.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

High Flow Aluminum Charge Pipe Kit - Audi B8 A4/A5 2.0T

ES#2785242 - 002894ECS01KT - High Flow Aluminum Charge Pipe Kit - Audi B8 A4/A5 2.0T - Increase intake air flow with aluminum charge pipes for your OEM intercooler! - ECS - Audi

Increase intake air flow with aluminum charge pipes for your OEM intercooler! 10X Entries For Our 25th Anniversary Sweepstakes!
For direct-fit use with factory turbocharger 3 bolt flange - Modifications may be necessary if paired wit

Brand:
ECS - Corporate Logo
ES#:
2785242
Mfg#:
002894ECS01KT
In Stock
ON SALE! SAVE 25%
$623.99

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

$467.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Parts & Upgrades

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