Skip to content

SHOP BY CAR
SHOP BY PART
- Brakes
  
  Big Brake Kits
  Braided Lines
  Brake Discs
  Brake Fluid
  Brake Pads
  Brake Drums
  Brake Shoes
- Cooling
  
  Expansion Tanks
  Fans & Shrouds
  Gearbox Coolers
  Intercoolers
  Oil Coolers
  Radiators
  Radiator Caps
  Thermostats
  Turbo Blankets
- Drivetrain
  
  Clutch Kits
  Differentials
  Flywheels
  Shifter Bushes
  Short Shifters
  Transmission Coolers
- Electronics
  
  Boost Controllers
  Gauges
- Engine
  
  Belts & Chains
  Engine Mounts
  Lightweight Pulleys
  Oil Catch Cans
  Oil Filler Caps
  Oil Filters
  Silicones Hoses
- Engine Build
  
  Bearings
  Bolts & Fasteners
  Camshafts
  Crankshaft
  Gaskets
  Pistons & Rods
- Exhaust
  
  Decats
  Exhaust Bushes
  Exhaust Manifolds
  Exhaust Systems
  Sports Cats
- Fuelling
  
  Fuel Injectors
  Fuel Pressure Regulators
  Fuel Pumps
  Fuel Rails
- Intake
  
  Air Intakes
  Air Filter Socks
  Inlet Manifolds
  Panel Filters
  Pipework
- Fluids
  
  Brake Fluid
  Coolant
  Engine Oil
  Gearbox Oil
  Lubricant
- Forced Induction
  
  Actuators
  Blow off Valves
  Diverter Valves
  Superchargers
  Turbos
  Wastegates
- Interior
  
  Gear & Handbrake Gaiters
  Harnesses
  Seat Rails & Mounts
  Seats
  Shift Knobs
  Steering Wheels
- Suspension
  
  Air Suspension
  Anti-Roll Bars & Links
  Ball Joints
  Bump Steer Kits
  Bushes
  Chassis Bars & Braces
  Coilovers
  Lift Springs
  Lowering Springs
  Roll Center Adjusters
  Shock Absorbers
  Suspension Arms
  Steering
BRANDS
ALLOY WHEELS
BLOG
MERCH

Country/region

Search

Ireland GBP £
Italy GBP £
United Kingdom GBP £
United States GBP £

X (Twitter)
Facebook
Instagram
TikTok

Search

SHOP BY CAR
SHOP BY PART
BRANDS
ALLOY WHEELS
BLOG
MERCH

Search

Item added to your cart

View cart

Collection: S4 B9 [17-]

Performance & Tuning Parts for Audi S4 B9

Filter:

Product type

0 selected

Product type

Cooling (1 product)
Engine & Tuning (2 products)
Exhaust System (74 products)
Suspension & Chassis (10 products)

Brand

0 selected

Brand

Milltek (73 products)
Mishimoto (1 product)
MST Performance (1 product)
Powerflex (10 products)
Wagner Tuning (2 products)

Sort by:

87 products

Filter and sort Filter

Filter and sort

Filter

87 products

Product type

Cooling (1 products)
Engine & Tuning (2 products)
Exhaust System (74 products)
Suspension & Chassis (10 products)

Clear

Brand

Milltek (73 products)
Mishimoto (1 products)
MST Performance (1 products)
Powerflex (10 products)
Wagner Tuning (2 products)

Clear

Sort by:

Remove all

87 products

Milltek Active Sound Control for Audi S4 3.0 Bi-TDI B9 (19-22)

Sale

Milltek Active Sound Control for Audi S4 3.0 Bi-TDI B9 (19-22)

Regular price £819.63 GBP

Regular price ~~£910.70 GBP~~ Sale price £819.63 GBP

Save 10%
Unit price per

Sale
Milltek Active Valve Control for Audi S4 B9 Sport Diff (16-22)

Sale

Milltek Active Valve Control for Audi S4 B9 Sport Diff (16-22)

Regular price £537.37 GBP

Regular price ~~£597.08 GBP~~ Sale price £537.37 GBP

Save 10%
Unit price per

Sale
Milltek Active Valve Control for Audi S4 B9 Without Sport Diff (16-22)

Sale

Milltek Active Valve Control for Audi S4 B9 Without Sport Diff (16-22)

Regular price £537.37 GBP

Regular price ~~£597.08 GBP~~ Sale price £537.37 GBP

Save 10%
Unit price per

Sale
Milltek Cat Back Exhaust Black for Audi RS4 B9 Non-OPF (18-22)

Sale

Milltek Cat Back Exhaust Black for Audi RS4 B9 Non-OPF (18-22)

Regular price £2,564.84 GBP

Regular price ~~£2,849.82 GBP~~ Sale price £2,564.84 GBP

Save 10%
Unit price per

Sale
Milltek Cat Back Exhaust Burnt Titanium for Audi RS4 B9 Non-OPF (18-22)

Sale

Milltek Cat Back Exhaust Burnt Titanium for Audi RS4 B9 Non-OPF (18-22)

Regular price £2,793.58 GBP

Regular price ~~£3,103.98 GBP~~ Sale price £2,793.58 GBP

Save 10%
Unit price per

Sale
Milltek Cat Back Exhaust Polished for Audi RS4 B9 Non-OPF (18-22)

Sale

Milltek Cat Back Exhaust Polished for Audi RS4 B9 Non-OPF (18-22)

Regular price £2,455.88 GBP

Regular price ~~£2,728.76 GBP~~ Sale price £2,455.88 GBP

Save 10%
Unit price per

Sale
Milltek Cat Back Exhaust Titanium for Audi RS4 B9 Non-OPF (18-22)

Sale

Milltek Cat Back Exhaust Titanium for Audi RS4 B9 Non-OPF (18-22)

Regular price £2,719.23 GBP

Regular price ~~£3,021.37 GBP~~ Sale price £2,719.23 GBP

Save 10%
Unit price per

Sale
Milltek Cat Replacement Pipe for Audi S4 B9 (16-22)

Sale

Milltek Cat Replacement Pipe for Audi S4 B9 (16-22)

Regular price £628.11 GBP

Regular price ~~£697.90 GBP~~ Sale price £628.11 GBP

Save 10%
Unit price per

Sale
Milltek Cat Replacement Pipe for Audi S4 B9 Sport Diff (16-22)

Sale

Milltek Cat Replacement Pipe for Audi S4 B9 Sport Diff (16-22)

Regular price £628.11 GBP

Regular price ~~£697.90 GBP~~ Sale price £628.11 GBP

Save 10%
Unit price per

Sale
Milltek Cat Replacement Pipes for Audi RS4 B9 Non-OPF (18-22)

Sale

Milltek Cat Replacement Pipes for Audi RS4 B9 Non-OPF (18-22)

Regular price £1,617.41 GBP

Regular price ~~£1,797.12 GBP~~ Sale price £1,617.41 GBP

Save 10%
Unit price per

Sale
Milltek HJS Tuning ECE Exhaust Downpipes for Audi S4 B9 (16-22)

Sale

Milltek HJS Tuning ECE Exhaust Downpipes for Audi S4 B9 (16-22)

Regular price £3,481.92 GBP

Regular price ~~£3,868.80 GBP~~ Sale price £3,481.92 GBP

Save 10%
Unit price per

Sale
Milltek HJS Tuning ECE Exhaust Downpipes for Audi S4 B9 Sport Diff (16-22)

Sale

Milltek HJS Tuning ECE Exhaust Downpipes for Audi S4 B9 Sport Diff (16-22)

Regular price £3,481.92 GBP

Regular price ~~£3,868.80 GBP~~ Sale price £3,481.92 GBP

Save 10%
Unit price per

Sale
Milltek Large Bore Exhaust Downpipe Decat for Audi RS4 B9 With OPF (19-22)

Sale

Milltek Large Bore Exhaust Downpipe Decat for Audi RS4 B9 With OPF (19-22)

Regular price £1,785.89 GBP

Regular price ~~£1,984.32 GBP~~ Sale price £1,785.89 GBP

Save 10%
Unit price per

Sale
Milltek Large Bore Exhaust Downpipes for Audi RS4 B9 Non-OPF (18-22)

Sale

Milltek Large Bore Exhaust Downpipes for Audi RS4 B9 Non-OPF (18-22)

Regular price £3,133.73 GBP

Regular price ~~£3,481.92 GBP~~ Sale price £3,133.73 GBP

Save 10%
Unit price per

Sale
Milltek Non-Res Cat Back Exhaust Black GT100 Tips for Audi S4 B9 (16-22)

Sale

Milltek Non-Res Cat Back Exhaust Black GT100 Tips for Audi S4 B9 (16-22)

Regular price £2,322.50 GBP

Regular price ~~£2,580.56 GBP~~ Sale price £2,322.50 GBP

Save 10%
Unit price per

Sale
Milltek Non-Res Cat Back Exhaust Black GT90 Tips for Audi S4 B9 (16-22)

Sale

Milltek Non-Res Cat Back Exhaust Black GT90 Tips for Audi S4 B9 (16-22)

Regular price £2,491.38 GBP

Regular price ~~£2,768.20 GBP~~ Sale price £2,491.38 GBP

Save 10%
Unit price per

Sale
Milltek Non-Res Cat Back Exhaust Black Oval Tips for Audi S4 B9 (16-22)

Sale

Milltek Non-Res Cat Back Exhaust Black Oval Tips for Audi S4 B9 (16-22)

Regular price £2,645.64 GBP

Regular price ~~£2,939.60 GBP~~ Sale price £2,645.64 GBP

Save 10%
Unit price per

Sale
Milltek Non-Res Cat Back Exhaust Black Oval Tips for Audi S4 B9 with Sport Diff

Sale

Milltek Non-Res Cat Back Exhaust Black Oval Tips for Audi S4 B9 with Sport Diff

Regular price £2,645.64 GBP

Regular price ~~£2,939.60 GBP~~ Sale price £2,645.64 GBP

Save 10%
Unit price per

Sale
Milltek Non-Res Cat Back Exhaust Black Tips for Audi RS4 B9 Non-OPF (18-22)

Sale

Milltek Non-Res Cat Back Exhaust Black Tips for Audi RS4 B9 Non-OPF (18-22)

Regular price £2,672.08 GBP

Regular price ~~£2,968.98 GBP~~ Sale price £2,672.08 GBP

Save 10%
Unit price per

Sale
Milltek Non-Res Cat Back Exhaust Black Tips for Audi RS4 B9 With OPF (19-22)

Sale

Milltek Non-Res Cat Back Exhaust Black Tips for Audi RS4 B9 With OPF (19-22)

Regular price £2,916.25 GBP

Regular price ~~£3,240.28 GBP~~ Sale price £2,916.25 GBP

Save 10%
Unit price per

Sale
Milltek Non-Res Cat Back Exhaust Burnt Tips for Audi RS4 B9 Non-OPF (18-22)

Sale

Milltek Non-Res Cat Back Exhaust Burnt Tips for Audi RS4 B9 Non-OPF (18-22)

Regular price £2,845.44 GBP

Regular price ~~£3,161.60 GBP~~ Sale price £2,845.44 GBP

Save 10%
Unit price per

Sale
Milltek Non-Res Cat Back Exhaust Burnt Titanium GT100 Tips for Audi S4 B9 16-22

Sale

Milltek Non-Res Cat Back Exhaust Burnt Titanium GT100 Tips for Audi S4 B9 16-22

Regular price £2,921.07 GBP

Regular price ~~£3,245.63 GBP~~ Sale price £2,921.07 GBP

Save 10%
Unit price per

Sale
Milltek Non-Res Cat Back Exhaust Burnt Titanium GT90 Tips for Audi S4 B9 (16-22)

Sale

Milltek Non-Res Cat Back Exhaust Burnt Titanium GT90 Tips for Audi S4 B9 (16-22)

Regular price £2,927.40 GBP

Regular price ~~£3,252.67 GBP~~ Sale price £2,927.40 GBP

Save 10%
Unit price per

Sale
Milltek Non-Res Cat Back Exhaust Burnt Titanium Tips for Audi RS4 B9 OPF (19-22)

Sale

Milltek Non-Res Cat Back Exhaust Burnt Titanium Tips for Audi RS4 B9 OPF (19-22)

Regular price £3,089.61 GBP

Regular price ~~£3,432.90 GBP~~ Sale price £3,089.61 GBP

Save 10%
Unit price per

Sale
Milltek Non-Res Cat Back Exhaust Carbon JET100 Tips for Audi S4 B9 (16-22)

Sale

Milltek Non-Res Cat Back Exhaust Carbon JET100 Tips for Audi S4 B9 (16-22)

Regular price £2,567.11 GBP

Regular price ~~£2,852.34 GBP~~ Sale price £2,567.11 GBP

Save 10%
Unit price per

Sale
Milltek Non-Res Cat Back Exhaust Carbon Tips for Audi S4 B9 with Sport Diff

Sale

Milltek Non-Res Cat Back Exhaust Carbon Tips for Audi S4 B9 with Sport Diff

Regular price £2,567.11 GBP

Regular price ~~£2,852.34 GBP~~ Sale price £2,567.11 GBP

Save 10%
Unit price per

Sale
Milltek Non-Res Cat Back Exhaust for Audi RS4 B9 (19-22)

Sale

Milltek Non-Res Cat Back Exhaust for Audi RS4 B9 (19-22)

Regular price £2,827.77 GBP

Regular price ~~£3,141.97 GBP~~ Sale price £2,827.77 GBP

Save 10%
Unit price per

Sale
Milltek Non-Res Cat Back Exhaust for Audi RS4 B9 Non-OPF (18-22)

Sale

Milltek Non-Res Cat Back Exhaust for Audi RS4 B9 Non-OPF (18-22)

Regular price £2,583.61 GBP

Regular price ~~£2,870.68 GBP~~ Sale price £2,583.61 GBP

Save 10%
Unit price per

Sale
Milltek Non-Res Cat Back Exhaust for Audi S4 B9 (16-22)

Sale

Milltek Non-Res Cat Back Exhaust for Audi S4 B9 (16-22)

Regular price £2,480.39 GBP

Regular price ~~£2,755.99 GBP~~ Sale price £2,480.39 GBP

Save 10%
Unit price per

Sale
Milltek Non-Res Cat Back Exhaust GT100 Black for Audi S4 B9 with Sport Diff

Sale

Milltek Non-Res Cat Back Exhaust GT100 Black for Audi S4 B9 with Sport Diff

Regular price £2,322.50 GBP

Regular price ~~£2,580.56 GBP~~ Sale price £2,322.50 GBP

Save 10%
Unit price per

Sale
Milltek Non-Res Cat Back Exhaust GT100 Burnt Titanium for Audi S4 B9 Sport Diff

Sale

Milltek Non-Res Cat Back Exhaust GT100 Burnt Titanium for Audi S4 B9 Sport Diff

Regular price £2,921.07 GBP

Regular price ~~£3,245.63 GBP~~ Sale price £2,921.07 GBP

Save 10%
Unit price per

Sale
Milltek Non-Res Cat Back Exhaust GT100 Polished for Audi S4 B9 with Sport Diff

Sale

Milltek Non-Res Cat Back Exhaust GT100 Polished for Audi S4 B9 with Sport Diff

Regular price £2,322.50 GBP

Regular price ~~£2,580.56 GBP~~ Sale price £2,322.50 GBP

Save 10%
Unit price per

Sale
Milltek Non-Res Cat Back Exhaust GT100 Titanium for Audi S4 B9 with Sport Diff

Sale

Milltek Non-Res Cat Back Exhaust GT100 Titanium for Audi S4 B9 with Sport Diff

Regular price £2,617.02 GBP

Regular price ~~£2,907.80 GBP~~ Sale price £2,617.02 GBP

Save 10%
Unit price per

Sale
Milltek Non-Res Cat Back Exhaust Polished GT100 Tips for Audi S4 B9 (16-22)

Sale

Milltek Non-Res Cat Back Exhaust Polished GT100 Tips for Audi S4 B9 (16-22)

Regular price £2,322.50 GBP

Regular price ~~£2,580.56 GBP~~ Sale price £2,322.50 GBP

Save 10%
Unit price per

Sale
Milltek Non-Res Cat Back Exhaust Polished GT90 Tips for Audi S4 B9 (16-22)

Sale

Milltek Non-Res Cat Back Exhaust Polished GT90 Tips for Audi S4 B9 (16-22)

Regular price £2,327.61 GBP

Regular price ~~£2,586.23 GBP~~ Sale price £2,327.61 GBP

Save 10%
Unit price per

Sale
Milltek Non-Res Cat Back Exhaust Polished Tips for Audi S4 B9 with Sport Diff

Sale

Milltek Non-Res Cat Back Exhaust Polished Tips for Audi S4 B9 with Sport Diff

Regular price £2,480.39 GBP

Regular price ~~£2,755.99 GBP~~ Sale price £2,480.39 GBP

Save 10%
Unit price per

Sale

1
2
3

Contact

ID-Workz Ltd
943 Leeds Road
Huddersfield, West Yorkshire
HD2 1UP

Tel: 01484 535665

Email: sales@id-workz.co.uk

Facebook
Instagram
TikTok
X (Twitter)

Quick links

My Account
Order History
Wish List
Brands
Contact
Terms of Service
Refund policy

Information

About Us
Delivery Information
Privacy Policy
Terms & Condition
Returns
Site Map

Newsletter

Subscribe to our emails for exclusive discounts

Email

Payment methods

© 2025, ID-Workz

Choosing a selection results in a full page refresh.
Opens in a new window.