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.
Stoptech
YL CALIPERS/SLOTTED ROTOR
Stoptech
Stoptech ST TRUCK SUV BRAKE PADS Front Audi Ford A4 A4 allroad A4 Quattro A5 A5 Quattro allr
Stoptech
TROPHY SPORT BIG BRAKE KIT 2 PIECE

Stoptech
BBK 2PC ROTOR, FRONT
Stoptech
YL CALIPERS/SLOTTED ROTOR
Stoptech
BIG BRAKE KIT 2 PIECE ROTOR, FRONT
Stoptech
SIL CALIPER/DRILLED ROTOR
Stoptech
TROPHY SPORT BIG BRAKE KIT 2 PIECE

Stoptech
BIG BRAKE KIT 2 PIECE ROTOR, FRONT
Stoptech
OE ELITE BRAKE KIT 2 WHEEL

Stoptech
SIL CALIPER/DRILLED ROTOR

Stoptech
SLOTTED CRYO ROTOR

Stoptech
SLOTTED CRYO ROTOR

Stoptech
ROTOR, CRYO LEFT
Stoptech
Sportstop Cryo Sport Dril
Stoptech
STR40/34-40/35

Stoptech
BBK 2PC ROTOR, FRONT
Stoptech
BL CALIPERS/SLOTTED ROTOR
Stoptech
SPORT AXLE PACK; SLOTTED AND DRILLE
Stoptech
SPORT AXLE PACK; SLOTTED AND DRILLE
Stoptech
SPORT AXLE PACK; SLOTTED AND DRILLE
Stoptech
STR40/40-44/35
Stoptech
BL CALIPERS/SLOTTED ROTOR
Stoptech
SPORT AXLE PACK; SLOTTED AND DRILLE
Stoptech
TROPHY SPORT BIG BRAKE KIT 2 PIECE
Stoptech
BIG BRAKE KIT 2 PIECE ROTOR, FRONT

Stoptech
PREFERRED AXLE PACK 4 WHEEL

NGK
ABS WHEEL SPEED SENSOR

Hella
MASTER CYLINDER BRAKES 8AM
Stoptech
SPORT AXLE PACK; SLOTTED AND DRILLE

Stoptech
SELECT AXLE PACK SINGLE AXLE

Hella
BRAKE CALIPER
Stoptech
ST65/34-36-38/34
Stoptech
SPORT AXLE PACK; SLOTTED AND DRILLE
Stoptech
SPORT AXLE PACK; SLOTTED AND DRILLE
Stoptech
SPORT AXLE PACK; SLOTTED AND DRILLE
Stoptech
SPORT AXLE PACK; DRILLED; 4 WHEEL K
Stoptech
SPORT AXLE PACK; DRILLED; FRONT BRA
Stoptech
SPORT AXLE PACK; DRILLED; 4 WHEEL K

Stoptech
YL CALIPERS/DRILLED ROTOR

Hella
WHEEL SPEED-SENSOR
Stoptech
BIG BRAKE KIT 2 PIECE ROTOR, FRONT
Stoptech
STR40/44-44/35

Stoptech
STR40/44-44/35
Stoptech
TROPHY SPORT BIG BRAKE KIT 2 PIECE

Stoptech
OE Plus Brake Kit 2 Wheel
Stoptech
OE PREMIUM COATED BRAKE KIT 4 WHEEL

Bosch
DISC BRAKE ROTOR
Bosch
DISC BRAKE ROTOR
Stoptech
TROPHY SPORT BIG BRAKE KIT 2 PIECE

Stoptech
BIG BRAKE KIT 2 PIECE ROTOR, FRONT

Stoptech
ST60/36-38-40/35U
Stoptech
SPORT AXLE PACK; SLOTTED AND DRILLE
Stoptech
SPORT AXLE PACK; SLOTTED AND DRILLE

Stoptech
BL CALIPERS/DRILLED ROTOR
Stoptech
BL CALIPERS/SLOTTED ROTOR
Stoptech
ST60/30-36-36/35
Stoptech
ST65/30-34-36/35
Stoptech
SEMI-LOADED CALIPER

NGK
ABS WHEEL SPEED SENSOR
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