Aftermarket Upgrades

Audi S4 B9 Parts & Modifications

Browse high-quality aftermarket parts for the Audi S4 B9. Shop exterior & interior accessories as well as suspension upgrades, exhaust systems & more.

BMW G80 M3 Exterior Styling Parts
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BMW G80 M3 Brakes
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Exhaust Systems

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R44 Performance Square Sticker-R44 Performance
R44 MerchR44 Performance Square Sticker
£1.99GBP
Save £3.00
MAGNFIX Magnetic License Number Plate Holder by TwistNFix MAGNFIX Magnetic License Number Plate Holder by TwistNFix
twistNfixTwistNFix MAGNFIX Magnetic License Plate Holder
£49.99GBP £52.99GBP
R44 Performance Long Sticker R44 Performance Long Sticker
R44 MerchR44 Performance Long Sticker
£1.99GBP
Sold out
R44 Performance Sunstrip In Matte Black-R44 Performance R44 Performance Sunstrip In Matte Black-R44 Performance
R44 MerchR44 Performance Sunstrip In Matte Black
£29.99GBP
Save £1.76
Motul RBF 660 Factory Line Fully Synthetic DOT 4 Racing Brake & Clutch Fluid Motul RBF 660 Factory Line Fully Synthetic DOT 4 Racing Brake & Clutch Fluid
MOTULMotul RBF 660 Factory Line Fully Synthetic DOT 4 Racing Brake & Clutch Fluid
£15.88GBP £17.64GBP
Bimecc Audi Wheel Spacers Centre Bore 66.6 (S6, S5, S4, RS6, RS5, RS4, A4)-R44 Performance Bimecc Audi Wheel Spacers Centre Bore 66.6 (S6, S5, S4, RS6, RS5, RS4, A4)-R44 Performance
BimeccBimecc Audi Wheel Spacers Centre Bore 66.6 (S6, S5, S4, RS6, RS5, RS4, A4)
From £96.99GBP
R44 Performance Square Drip Logo Sticker R44 Performance Square Drip Logo Sticker
R44 MerchR44 Performance Square 'Drip' Sticker
£1.99GBP
Save £1.00
Motul 500ml RBF 600 Factory Line Dot 4 Brake Oil Fluid Motul 500ml RBF 600 Factory Line Dot 4 Brake Oil Fluid
MOTULMotul 500ml RBF 600 Factory Line Dot 4 Brake Oil Fluid
£8.99GBP £9.99GBP
Save £5.00
Motul 300V Competition 5W-40 Engine Oil Motul 300V Competition 5W-40 Engine Oil
MOTULMotul 300V Competition 5W-40 Engine Oil
From £44.99GBP £49.99GBP
Castrol React SRF Racing Brake Fluid 1L-R44 Performance
CastrolCastrol React SRF Racing Brake Fluid 1L
£99.99GBP
Save £0.40
Pagid Cera Tec Metal Free Brake Pad Lubricant (Grease) 75ml
PagidPagid Cera Tec Metal Free Brake Pad Lubricant (Grease) 75ml
£3.59GBP £3.99GBP
R44 Performance Bottle Opener R44 Performance Bottle Opener
R44 MerchR44 Performance Bottle Opener
£5.99GBP
R44 Performance Racing Co. Bottle Opener (with secret discount QR code) R44 Performance Racing Co. Bottle Opener (with secret discount QR code)
R44 MerchR44 Performance Racing Co. Bottle Opener (with secret discount QR code)
£5.99GBP
Save £3.00
TwistNFix Car License Plate Holder V3 In Black TwistNFix Car License Plate Holder V3 In Black
twistNfixTwistNFix License Plate Holder V3 In Black
£49.99GBP £52.99GBP
MMR Racing Brake Fluid 500ml-R44 Performance
MMXMMX Racing Brake Fluid 500ml
£12.59GBP
JQ Werks Madtrace® Audi S3/RS3/RS4/RS5 Clubsport Magnetic Paddle Shifters (2017+ B9/8V) JQ Werks Madtrace® Audi S3/RS3/RS4/RS5 Clubsport Magnetic Paddle Shifters (2017+ B9/8V)
JQ WerksJQ Werks Madtrace® Audi S3/RS3/RS4/RS5 Clubsport Magnetic Paddle Shifters (2017+ B9/8V)
£389.99GBP
Bimecc Wheel Alignment Tool For BMW, Audi & Porsche Bimecc Wheel Alignment Tool For BMW, Audi & Porsche
BimeccBimecc Wheel Alignment Tool For BMW, Audi & Porsche
£6.99GBP
Save £1.10
Motul 8100 X-Clean EFE 5W-30 Fully Synthetic Engine Oil Motul 8100 X-Clean EFE 5W-30 Fully Synthetic Engine Oil
MOTULMotul 8100 X-Clean EFE 5W-30 Fully Synthetic Engine Oil
From £9.89GBP £10.99GBP
Funk Motorsport Black Silicon High Heat Sleeve
Funk MotorsportFunk Motorsport Black Silicon High Heat Sleeve
From £21.00GBP
Maxton Design Audi S4 B9 Side Skirts In Gloss Black Maxton Design Audi S4 B9 Side Skirts In Gloss Black
Maxton DesignMaxton Design Audi S4 Side Skirts In Gloss Black (B9)
£174.00GBP
Funk Motorsport Titanium Exhaust Wrap Funk Motorsport Titanium Exhaust Wrap
Funk MotorsportFunk Motorsport Titanium Exhaust Wrap
From £36.00GBP
Save £1.00
Motul Trans ATF VI High Performance Transmission Fluid 1L 109771
MOTULMotul Trans ATF VI High Performance Transmission Fluid 1L
£8.99GBP £9.99GBP
K&N Air Filter For Audi B9 RS4 & S4 E-0646
K&NK&N Replacement Air Filter For Audi RS4, S4, RS5 & S5 (B9)
£93.99GBP
Funk Motorsport External Wastegate Blanket Funk Motorsport External Wastegate Blanket
Funk MotorsportFunk Motorsport External Wastegate Blanket
From £72.50GBP
Save £1.00
Motul Auto Cool Expert Ultra Coolant 1L
MOTULMotul Auto Cool Expert Ultra Coolant 1L
£8.99GBP £9.99GBP
Save £1.90
Motul 8100 Power 5W-40 Fully Synthetic High Performance ESTER Engine Oil Motul 8100 Power 5W-40 Fully Synthetic High Performance ESTER Engine Oil
MOTULMotul 8100 Power 5W-40 Fully Synthetic High Performance ESTER Engine Oil
From £17.09GBP £18.99GBP
MST Intakes Audi S4 & S5 B9 Performance Induction Kit MST Intakes Audi S4 & S5 B9 Performance Induction Kit
MSTMST Audi S4/S5 3.0 TFSI Performance Induction Kit (B9 2019+)
£362.11GBP
Maxton Spoiler Cap Audi S4/ A4 S-Line B9 Avant-R44 Performance Maxton Spoiler Cap Audi S4/ A4 S-Line B9 Avant-R44 Performance
Maxton DesignMaxton Spoiler Cap Audi S4/ A4 S-Line B9 Avant
£129.00GBP
Maxton Front Splitter V2 Audi S4/ A4 S-Line B9-R44 Performance Maxton Front Splitter V2 Audi S4/ A4 S-Line B9-R44 Performance
Maxton DesignMaxton Front Splitter V2 Audi S4/ A4 S-Line B9
£174.00GBP
Maxton Front Splitter V1 Audi S4/ A4 S-Line B9-R44 Performance Maxton Front Splitter V1 Audi S4/ A4 S-Line B9-R44 Performance
Maxton DesignMaxton Front Splitter V1 Audi S4/ A4 S-Line B9
£174.00GBP