QUATTRO MEETS PRACTICALITY
B5 through B9 — Audi's compact sedan with available Quattro AWD and turbo power.
Audi A4 HERITAGE
THE QUATTRO COMPACT
MOTORMIA A4 builds span B5 1.8T stage-3 tuners, B7 RS4 V8 swap projects, B8/B9 ECU-tuned dailies, and the S4 supercharged V6 generation. Many parts cross-fit with VW MK6/MK7 platforms.
Audi A4 ON MOTORMIA
THE NUMBERS
CATEGORIES
Top product categories for the Audi A4
BRANDS
Top brands for Audi A4 builds
READY TO BUILD YOUR AUDI A4?
Pick your year and trim to shop verified-fit Audi A4 parts.
Shop all Audi A4 parts →Verified Fitment
Audi A4 Category brakes Parts
2156 parts available
Shop aftermarket parts for the Audi A4. Verified fitment, free shipping, 30-day returns.
PowerStop
Power Stop 02-05 Audi A4 Front & Rear Z23 Evolution Sport Coated Brake Kit
PowerStop
Power Stop 96-97 Audi A4 Front & Rear Z23 Evolution Sport Brake Kit

PowerStop
Power Stop 17-18 Audi A4 Front & Rear Autospecialty Brake Kit
Stoptech
Street Axle Pack Drilled & Slotted, Rear

PowerStop
Power Stop 04-05 Audi A4 Quattro Front & Rear Z23 Evolution Sport Coated Brake Kit
PowerStop
Power Stop 99-01 Audi A4 Quattro Front & Rear Autospecialty Brake Kit
PowerStop
Power Stop 2019 Audi A4 Front & Rear Z23 Evolution Sport Brake Kit
Stoptech
Street Axle Pack, Slotted, Rear
Stoptech
Sport Axle Pack, Drilled & Slotted, 4 Wheel
Stoptech
Centric Premium Semi-Metallic Brake Pads w/Shims - Rear

PowerStop
Power Stop 99-01 Audi A4 Quattro Front & Rear Autospecialty Brake Kit w/Calipers

PowerStop
Power Stop 02-05 Audi A4 Rear Z23 Evolution Sport Brake Kit w/Calipers
Stoptech
Sport Axle Pack; Slotted; Rear w/BL
Stoptech
Sport Axle Pack, Drilled & Slotted, Rear
PowerStop
Power Stop 12-16 Audi A4 Front & Rear Euro-Stop Brake Kit
PowerStop
Power Stop 97-98 Audi A4 Front & Rear Autospecialty Brake Kit

PowerStop
Power Stop 09-11 Audi A4 Front & Rear Autospecialty Brake Kit

PowerStop
Power Stop 99-01 Audi A4 Front & Rear Autospecialty Brake Kit
PowerStop
Power Stop 05-09 Audi A4 Front & Rear Autospecialty Kit w/Cals
Stoptech
Street Axle Pack Drilled & Slotted, Front

PowerStop
Power Stop 99-01 Audi A4 Front & Rear Z23 Evolution Sport Brake Kit w/Calipers
Stoptech
Street Axle Pack, Drilled, 4 Wheel
Stoptech
Street Axle Pack, Drilled & Slotted, 4 Wheel
Stoptech
Street Axle Pack - Drilled; Front

PowerStop
Power Stop 17-19 Audi A4 Front & Rear Z23 Evolution Sport Coated Brake Kit
PowerStop
Power Stop 96-98 Audi A4 Quattro Front & Rear Autospecialty Brake Kit

PowerStop
Power Stop 02-05 Audi A4 Front & Rear Z23 Evolution Sport Brake Kit

PowerStop
Power Stop 99-01 Audi A4 Front & Rear Z26 Street Warrior Brake Kit w/Calipers
Stoptech
Street Axle Pack, Slotted, Front
Stoptech
Sport Axle Pack; Drilled; Rear w/BL
PowerStop
Power Stop 96-97 Audi A4 Front & Rear Autospecialty Brake Kit

PowerStop
Power Stop 99-01 Audi A4 Front & Rear Autospecialty Brake Kit w/Calipers
PowerStop
Power Stop 99-01 Audi A4 Quattro Front & Rear Z26 Street Warrior Brake Kit w/Calipers

Stoptech
Centric C-TEK 01-09 Audi A4 / 05-09 Audi A4 Quattro Ceramic Brake Pads w/ Shims - Front
Stoptech
Sport Axle Pack; Slotted; Rear w/BL

Stoptech
Centric 17-21 Audi A4 (Incl. Quattro) C-TEK Standard Brake Rotor - Front

Stoptech
Centric 09-16 Audi A4 & 10-17 Audi A5 Front Disc Brake Hardware Kit
Stoptech
Sport Axle Pack, Drilled & Slotted, Front
Stoptech
Street Axle Pack - Drilled; Front

Stoptech
Centric 2001-2009 Audi A4 / 2005-2009 A4 Quattro Standard Front Brake Rotor
Stoptech
Sport Axle Pack, Drilled & Slotted, 4 Wheel
Stoptech
Sport Axle Pack, Drilled & Slotted, 4 Wheel
Stoptech
Sport Axle Pack; Slotted; 4W w/BL
Stoptech
Sport Axle Pack; Slotted; Front w/BL
Stoptech
Street Axle Pack Drilled & Slotted, Front

Stoptech
Centric 09-10 Audi A4/A4 Quattro / 08-10 A5 / 10 S4 Rear Premium High Carbon Rotor
Stoptech
Sport Axle Pack, Drilled & Slotted, Front
Stoptech
Centric Premium Semi-Metallic Brake Pads w/Shims - Front
Stoptech
Street Axle Pack - Drilled; Rear

Stoptech
Select Pack Single Axle Front

Stoptech
Centric 93-10 Volkswagen Golf Rear Centric Premium Ceramic Brake Pads

Stoptech
Centric 2001-2009 Audi A4/A4 Quattro GCX Rotor w/ Full Coating - Front
Stoptech
Street Axle Pack, Drilled, 4 Wheel

Stoptech
Centric 08-17 Audi A5 Quattro Rear Disc Brake Hardware Kit
Stoptech
Sport Axle Pack; Drilled; Rear w/BL
Stoptech
Street Axle Pack, Drilled & Slotted, 4 Wheel
Stoptech
Street Axle Pack - Drilled; Front
Stoptech
Street Axle Pack, Slotted, Front
Stoptech
Sport Axle Pack, Drilled & Slotted, 4 Wheel
Stoptech
Street Axle Pack, Slotted, Front
FAQ
Frequently Asked Questions About the Audi A4
What are the best aftermarket parts brands for the Audi A4?
The top brands MOTORMIA owners trust for Audi A4 builds are EBC, PowerStop, H&R, Bilstein, and Magnaflow. The catalog carries 3,135 parts that fit the A4. Use the fitment selector to filter to your specific year and trim, then browse by category or brand.
What's the best trim or sub-model of the Audi A4 to modify?
The most-modified A4 trims are S4 (especially B5 / B7 / B8 / B9 supercharged). These trims typically came with performance-focused suspension, brakes, and engine options that give a higher starting point. That said, the A4's engine family (1.8T, 2.0T EA888, 3.0T supercharged (S4), 4.2 V8 (B7 RS4)) shares aftermarket across most trims, so base-trim builds with the right bolt-ons can match higher trims on power.
What's the typical mod path for a Audi A4?
For most Audi A4 builds, the recommended modification order is: ECU tune → intake → downpipe → suspension → turbo upgrade. This sequence stages upgrades so each mod supports the next — tuning unlocks gains from intake/exhaust, suspension keeps the added power planted. MOTORMIA member builds let you see exact part lists for Audi A4 builds at every power level.
How does the Audi A4 aftermarket compare to the BMW 3 Series?
The Audi A4 is the Quattro AWD compact sedan with the EA888 2.0T platform shared across Audi/VW. On MOTORMIA, 3,135 parts fit the A4 across 3,000+ active member builds, with an average part MSRP of $711. The decision usually comes down to which platform you own — both have full bolt-on catalogs.
Will any Audi A4 part fit my year and trim?
Not always. The Audi A4 has had multiple generations and engine changes (e.g., 1.8T, 2.0T EA888, 3.0T supercharged (S4), 4.2 V8 (B7 RS4)), and parts are generation- and trim-specific. MOTORMIA's catalog uses verified fitment data — every product page shows exactly which years and submodels of the A4 a part fits. Use the fitment selector at the top of any page to pre-filter to your build.
Does MOTORMIA offer returns on Audi A4 parts?
Yes. Most Audi A4 parts on MOTORMIA are eligible for our 30-day return policy provided they're unused, uninstalled, and in original packaging. Special-order parts are flagged with a "Special Order" badge on the product page. Manufacturer warranties are processed through MOTORMIA on your behalf.
MOTORMIA APP
Build your Audi A4 with Mia
Personalized Audi A4 mod recommendations, verified fitment from real A4 owners, and a garage that tracks every part on your build.
- Mod recommendations tuned to your A4 year, trim, and submodel
- Verified fitment data from 3,000+ Audi A4 member builds
- Performance gain estimates based on real-world results
- Save your garage and track every part you've installed