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Audi B9 A4 Quattro 2.0T Performance Parts & Upgrades

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2.76" stainless steel with your choice of tip style affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Milltek Sport - Corporate Logo
ES#:
4159433
Mfg#:
B9A4RESONATED
Ships in 3 Business Days
Starting at $2411.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4004062 - CTS-EXH-CB-0019 - Cat-Back Exhaust System  - 3.0" tig welded T304 stainless steel with dual 4.0" polished stainless tips - CTS - Audi

3.0" tig welded T304 stainless steel with dual 4.0" polished stainless tips affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles up through the 2018 model year only (Pre-Facelift)

Brand:
CTS - Corporate Logo
ES#:
4004062
Mfg#:
CTS-EXH-CB-0019
Ships in 8 Business Days
$1199.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4045892 - 1024x330x22 - 2-Piece Lightweight Rear Rotors - Pair (330x22) - Shaves 11lbs of unsprung weight from the rear of your car while increasing braking performance. - JH Motorsports  - Audi Porsche

Shaves 11lbs of unsprung weight from the rear of your car while increasing braking performance. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
JH Motorsports  - Corporate Logo
ES#:
4045892
Mfg#:
1024X330X22
Ships in 3 Business Days
$799.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4872510 - S-35-BR - BR Series Coilover Suspension Kit - B9 Audi A4/S4 - Featuring 30 levels of adjustment and performance spring rates and valving that makes the BR Series perfect for both daily drivers and track warriors! - BC Racing - Audi

Featuring 30 levels of adjustment and performance spring rates and valving that makes the BR Series perfect for both daily drivers and track warriors! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with production date up to 7/11/2016 with 53mm front strut body with factory Electronic Damping Control.

Brand:
BC Racing - Corporate Logo
ES#:
4872510
Mfg#:
S-35-BR
Ships on Aug 17, 2026
$1195.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3476425 - 021460TMS02-06 - 7.5mm Wheel Spacers - Black (Pair) - Lightweight wheel spacers with a machined tab for easy removal - Turner Motorsport - Audi BMW Mercedes Benz MINI Porsche

Lightweight wheel spacers with a machined tab for easy removal affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Turner Motorsport - Corporate Logo
ES#:
3476425
Mfg#:
021460TMS02-06
In Stock
ON SALE! SAVE 25%
$131.99

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

$98.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3171190 - 019318ecs01KT - Front & Rear Exact-Fit Stainless Steel Brake Lines - Kit - Complete set of DOT-compliant lines for an improved pedal feel - ECS - Audi

Complete 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#:
3171190
Mfg#:
019318ECS01KT
In Stock
$230.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3476922 - 023781ECS01-01 - Audi B9 Billet Tunnel Brace - Black - Replace your small and weak stamped brace with heavy-duty billet aluminum! - ECS - Audi

Replace your small and weak stamped brace with heavy-duty billet aluminum! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3476922
Mfg#:
023781ECS01-01
In Stock
ON SALE! SAVE 20%
$168.99

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

$135.19 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4751276 - 028801ECS01EB2KT - Audi B9 A4 Pre-facelift Rear Diffuser & Trunk Spoiler - Add some aggressive styling to your Audi! - Enthusiast Bundles - Audi

Add some aggressive styling to your Audi! Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits pre-facelift, S-line models (up to 2018), without integrated tips in the rear valance

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4751276
Mfg#:
028801ECS01EB2KT
In Stock
ON SALE! SAVE 35%
$706.56

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

$458.18 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3419340 - TS-VW-393A - Turbo Muffler Delete - Replace the factory turbo muffler with a straight, uninterrupted billet aluminum delete - Torque Solution - Audi Volkswagen

Replace the factory turbo muffler with a straight, uninterrupted billet aluminum delete affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Torque Solution - Corporate Logo
ES#:
3419340
Mfg#:
TS-VW-393A
In Stock
3% off MSRP

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

$94.43

This product was last offered at the strikethrough price on
06-24-2026

$91.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3979096 - 102100BM - V1 Series Coilover Kit - Variant 1 coilovers offer the best balance between sporty driving and comfort - KW Suspension - Audi

Variant 1 coilovers offer the best balance between sporty driving and comfort affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For models without factory Electronic Damping Control - For models with 48.5mm front strut body. Range of lowering is 1.2-2.2" in the front and 1.4-2.4" in the rear.

Brand:
KW Suspension - Corporate Logo
ES#:
3979096
Mfg#:
102100BM
Back Ordered
$2244.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3979094 - 102100bh - V1 Series Coilover Kit - Variant 1 coilovers offer the best balance between sporty driving and comfort - KW Suspension - Audi

Variant 1 coilovers offer the best balance between sporty driving and comfort affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For models without factory Electronic Damping Control - For models with 50mm front strut body. Range of lowering is 1.2-2.2" in the front and 1.4-2.4" in the rear.

Brand:
KW Suspension - Corporate Logo
ES#:
3979094
Mfg#:
102100BH
Back Ordered
$2244.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3426555 - 022526ecs01KT - Carbon Fiber Engine Cover Overlay - Add a touch of carbon fiber to your stock engine cover! - ECS - Audi

Add a touch of carbon fiber to your stock engine cover! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

For vehicles with production dates up to 03/22/2021

Brand:
ECS - Corporate Logo
ES#:
3426555
Mfg#:
022526ECS01KT
In Stock
ON SALE! SAVE 15%
$262.99

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

$223.54 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3176673 - SSXAU612 - Cat-Back Exhaust System - Road+ (Semi-Resonated)  - 2.76" stainless steel with dual GT100 polished tips - Milltek Sport - Audi

2.76" stainless steel with dual GT100 polished tips affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Milltek Sport - Corporate Logo
ES#:
3176673
Mfg#:
SSXAU612
Ships in 4 Business Days
$2213.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4159848 - B9A4SEMIRESONATE - Cat-Back Exhaust - Semi Resonated - 2.76" stainless steel with your choice of tip style - Milltek Sport - Audi

2.76" stainless steel with your choice of tip style affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Milltek Sport - Corporate Logo
ES#:
4159848
Mfg#:
B9A4SEMIRESONATE
Ships in 3 Business Days
Starting at $2213.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3419046 - 034-108-1012 - P34 Cold Air Intake System - Delivers improved power, sound, and acceleration to B9 Audi A4/Allroad & A5 owners in a clean OEM+ package. - 034Motorsport - Audi

Delivers improved power, sound, and acceleration to B9 Audi A4/Allroad & A5 owners in a clean OEM+ package. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles without a MAF sensor

Brand:
034Motorsport - Corporate Logo
ES#:
3419046
Mfg#:
034-108-1012
In Stock
$553.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3979038 - 02390-HDCL-SK - Clutch Masters FX400 Clutch Kit & Single Mass Flywheel - Features a Heavy duty pressure plate, Full-face ceramic lined sprung clutch disc, and a Steel Single Mass Flywheel - Clutch Masters - Audi

Features a Heavy duty pressure plate, Full-face ceramic lined sprung clutch disc, and a Steel Single Mass Flywheel affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Clutch Masters - Corporate Logo
ES#:
3979038
Mfg#:
02390-HDCL-SK
Ships in 8 Business Days
15% off MSRP

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

$2598.99

This product was last offered at the strikethrough price on
06-24-2026

$2208.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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