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Audi A4 Performance Parts & Upgrades

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034Motorsport Billet Fuel Rail Upgrade Kit

ES#3432394 - 034-106-7028 - 034Motorsport Billet Fuel Rail Upgrade Kit - Includes billet fuel rail, billet FPR adapter, hardware, and hoses for a simple drop-in installation - 034Motorsport - Audi Volkswagen

Includes billet fuel rail, billet FPR adapter, hardware, and hoses for a simple drop-in installation

Brand:
034Motorsport - Corporate Logo
ES#:
3432394
Mfg#:
034-106-7028
Ships in 8 Business Days
$318.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Differential Carrier Mount Insert Kit - Black

ES#4620258 - 8K0599257N - Rear Differential Carrier Mount Insert Kit - Black - Enhance your driving experience by filling the bushing void. - JH Motorsports - Audi

Enhance your driving experience by filling the bushing void.

Brand:
JH Motorsports - Corporate Logo
ES#:
4620258
Mfg#:
8K0599257N
Ships in 1-3 days
$67.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

1.8T Performance Ignition Service Kit

ES#5338629 - 056059LA084ISKT2 - 1.8T Performance Ignition Service Kit - Featuring one step colder, copper core NGK spark plugs & ECS performance ignition coils for increased spark energy. - ECS - Audi Volkswagen

Featuring one step colder, copper core NGK spark plugs & ECS performance ignition coils for increased spark energy. 10X Entries For Our 25th Anniversary Sweepstakes!
For Vehicles with Engine Codes ATW and AEB (Bolt-In Style Ignition Coils)

Brand:
ECS - Corporate Logo
ES#:
5338629
Mfg#:
056059LA084ISKT2
In Stock
ON SALE! SAVE 25%
$181.99

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

$135.79 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

RA4 240mm Clutch Conversion Kit - Stage 2

ES#5489 - ECSB6A4RS4CCKSTL - RA4 240mm Clutch Conversion Kit - Stage 2 - Lightweight flywheel with the RS4 pressure plate and disc - ECS - Audi

Lightweight flywheel with the RS4 pressure plate and disc 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
5489
Mfg#:
ECSB6A4RS4CCKSTL
Ships on Sep 14, 2026
Auto Notify
ON SALE! SAVE 10%
$1055.99

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

$950.39 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

JHM Helical Rear Limited Slip Differential

ES#4045950 - B6B7RearLSDMT - JHM Helical Rear Limited Slip Differential - Helical gears respond to changes in traction conditions very quickly - Improves traction and predictability of vehicle behavior: both rear wheels will spin at the same rate. - JH Motorsports - Audi

Helical gears respond to changes in traction conditions very quickly - Improves traction and predictability of vehicle behavior: both rear wheels will spin at the same rate. *Fitment confirmed in ETS, EXZ, & ETQ diff codes - Does not fit in some 2007+ differential cases - Please see fitment notes in product description for co

Brand:
JH Motorsports - Corporate Logo
ES#:
4045950
Mfg#:
B6B7REARLSDMT
Ships in 10 Business Days
$949.99 USD
Free Shipping
on orders $49 and up

JHM Solid Linkage Upgrade for 5-speed Transmission

ES#4046076 - LNK-B5B6A45S - JHM Solid Linkage Upgrade for 5-speed Transmission - Replaces the worn out rubber bushing located at the transmission. - JH Motorsports - Audi Volkswagen

Replaces the worn out rubber bushing located at the transmission.

Brand:
JH Motorsports - Corporate Logo
ES#:
4046076
Mfg#:
LNK-B5B6A45S
Ships in 2 Business Days
$99.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

B7 A4 2.0T Cat-Back Exhaust System - Resonated

ES#2918090 - SSXAU514 - B7 A4 2.0T Cat-Back Exhaust System - Resonated - 2.5" stainless steel with dual GT 100mm polished tips - Milltek Sport - Audi

2.5" stainless steel with dual GT 100mm polished tips Manual transmission only

Brand:
Milltek Sport - Corporate Logo
ES#:
2918090
Mfg#:
SSXAU514
Ships in 3 Business Days
$1897.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Performance Air Ride Kit

ES#3972077 - 78670 - Rear Performance Air Ride Kit - Allow your B9 Audi to sit on the ground! - Air Lift - Audi

Allow your B9 Audi to sit on the ground!

Brand:
Air Lift - Corporate Logo
ES#:
3972077
Mfg#:
78670
Ships in 4 Business Days
$1889.99 USD
This product is lifetime replacement eligible Lifetime Replacement

SP Series Cold Air Intake - Black

ES#3086223 - SP3080BLK - SP Series Cold Air Intake - Black - Better airflow for more power - Injen - Audi

Better airflow for more power CARB certified for sale in all 50 states

Brand:
Injen - Corporate Logo
ES#:
3086223
Mfg#:
SP3080BLK
EO#:
D-476-8
In Stock at Vendor
$471.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

19" Wheel Spacer Flush Fit Kit - Black Bolts

ES#4476369 - B9FLUSH1KT - 19" Wheel Spacer Flush Fit Kit - Black Bolts - Includes H&R spacers & Black bolts to obtain a flush look on your OE 19" wheels - Assembled By ECS - Audi

Includes H&R spacers & Black bolts to obtain a flush look on your OE 19" wheels 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4476369
Mfg#:
B9FLUSH1KT
Back Ordered
Auto Notify
ON SALE! SAVE 10%
$299.99

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

$269.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Density Line Adjustable Upper Control Arm Kit - Track Spec

ES#3141743 - 034-401-1009 - Density Line Adjustable Upper Control Arm Kit - Track Spec - Track Spec: Perfect for those who are low, and looking for even more negative camber for better track performance. - 034Motorsport - Audi Porsche

Track Spec: Perfect for those who are low, and looking for even more negative camber for better track performance.

Brand:
034Motorsport - Corporate Logo
ES#:
3141743
Mfg#:
034-401-1009
Back Ordered
$626.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Resonated

ES#2827275 - SSXAU089 - Cat-Back Exhaust System - Resonated - 2.5" stainless steel with dual 100mm polished tips - Milltek Sport - Audi

2.5" stainless steel with dual 100mm polished tips Fits 5 speed manual only

Brand:
Milltek Sport - Corporate Logo
ES#:
2827275
Mfg#:
SSXAU089
Ships in 3 Business Days
$1875.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Resonated

ES#2827276 - SSXAU090 - Cat-Back Exhaust System - Resonated - 2.5" stainless steel with dual 100mm polished tips - Milltek Sport - Audi

2.5" stainless steel with dual 100mm polished tips Fits 6 speed manual only

Brand:
Milltek Sport - Corporate Logo
ES#:
2827276
Mfg#:
SSXAU090
Ships in 3 Business Days
$1875.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Ignition Service Kit

ES#4818263 - 06E905115F3KT - Ignition Service Kit - Keep your engine running smooth with APR upgraded Coil Packs! - Assembled By ECS - Audi

Keep your engine running smooth with APR upgraded Coil Packs! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4818263
Mfg#:
06E905115F3KT
In Stock
$311.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Wheel Spacer Flush Fit Kit - Polished Bolts

ES#2834856 - 011326ecs01KT - Wheel Spacer Flush Fit Kit - Polished Bolts - Includes spacers & Polished bolts to obtain a flush look on your OE 18" wheels - ECS - Audi

Includes spacers & Polished bolts to obtain a flush look on your OE 18" wheels 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2834856
Mfg#:
011326ECS01KT
In Stock
ON SALE! SAVE 25%
$311.99

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

$233.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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