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Audi S4 Performance Parts & Upgrades

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Rear Sway Bar (25.4mm)

If understeer is an issue, increasing or adding a sway bar in the rear can help. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Megan Racing - Corporate Logo
ES#:
4833817
Mfg#:
MRS-AU-2091
Ships in 4 Business Days
$266.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Wheel Spacer Kit - 17mm (1 Pair)

ES#3672006 - MS100188 - Wheel Spacer Kit - 17mm (1 Pair) - 17mm spacers to perfectly dial in your stance or clear your big brake kit! - APR - Audi Volkswagen

17mm spacers to perfectly dial in your stance or clear your big brake kit! Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
APR - Corporate Logo
ES#:
3672006
Mfg#:
MS100188
Ships in 3 Business Days
11% off MSRP

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

$149.99

This product was last offered at the strikethrough price on
06-20-2026

$132.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rennline Heel/Toe Throttle Extension - Silver

ES#2840461 - PE75HSILVER - Rennline Heel/Toe Throttle Extension - Silver - Pedal extensions to customize your driving experience - Rennline - Audi Volkswagen

Pedal extensions to customize your driving experience affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Rennline - Corporate Logo
ES#:
2840461
Mfg#:
PE75HSILVER
In Stock
$53.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Transmission Street Shield Skid Plate Hardware Kit

ES#3659419 - n90610602KT - Transmission Street Shield Skid Plate Hardware Kit - Replacement hardware kit for your ECS Transmission Street Shield - Assembled By ECS - Audi

Replacement hardware kit for your ECS Transmission Street Shield affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3659419
Mfg#:
N90610602KT
In Stock
ON SALE! SAVE 24%
$173.99

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

$132.44 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Density Line Mount Mount Kit - Track Density

ES#3183375 - 034-509-0007tdKT - Density Line Mount Mount Kit - Track Density - Void-free and fluid-free, eliminating the slop associated with the factory mounts - 034Motorsport - Audi

Void-free and fluid-free, eliminating the slop associated with the factory mounts affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
3183375
Mfg#:
034-509-0007TDKT
In Stock
$264.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

20mm Wheel Spacers - Black (Pair)

ES#3476437 - 021460TMS03-08 - 20mm Wheel Spacers - Black (Pair) - Lightweight wheel spacers with a machined tab for easy removal - Turner Motorsport - Audi BMW 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#:
3476437
Mfg#:
021460TMS03-08
Ships on Sep 24, 2026
Auto Notify
ON SALE! SAVE 20%
$164.99

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

$131.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Wheel Spacer Kit - 6mm (1 Pair)

ES#3570108 - MS100153 - Wheel Spacer Kit - 6mm (1 Pair) - 6mm spacers to perfectly dial in your stance or clear your big brake kit! - APR - Audi Volkswagen

6mm spacers to perfectly dial in your stance or clear your big brake kit! Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
APR - Corporate Logo
ES#:
3570108
Mfg#:
MS100153
Ships in 5 Business Days
10% off MSRP

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

$97.99

This product was last offered at the strikethrough price on
06-20-2026

$87.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Upper Control Arm Bushings - Camber Adjustable

ES#4305154 - PFF3-1203G - Front Upper Control Arm Bushings - Camber Adjustable - Improves handling and control - upgrade to a more engaging driving experience - Powerflex - Audi

Improves handling and control - upgrade to a more engaging driving experience affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Powerflex - Corporate Logo
ES#:
4305154
Mfg#:
PFF3-1203G
Ships in 1 Business Day
$261.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front EP24 "Enthusiast Performance" Brake Pad Set

ES#4739110 - EP24-839 - Front EP24 "Enthusiast Performance" Brake Pad Set - This enthusiast-developed high-performance street and light track pad offers an ideal solution for the spirited commuter and weekend autocross driver alike. - ECS - Audi Volkswagen

This enthusiast-developed high-performance street and light track pad offers an ideal solution for the spirited commuter and weekend autocross driver alike. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4739110
Mfg#:
EP24-839
In Stock
ON SALE! SAVE 56%
$197.99

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

$86.82 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Forge Motorsport Recirculating Valve - Silver

ES#3980511 - FMDV13R-C - Forge Motorsport Recirculating Valve - Silver - Engineered to remedy the failure issues experienced with the OEM solenoid valves when the diaphragm or plastic piston fails - Forge - Audi

Engineered to remedy the failure issues experienced with the OEM solenoid valves when the diaphragm or plastic piston fails affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Forge - Corporate Logo
ES#:
3980511
Mfg#:
FMDV13R-C
Ships in 3 Business Days
$260.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

DR Series Wheel Spacers - 18mm (1 Pair)

ES#2561830 - 3655668 - DR Series Wheel Spacers - 18mm (1 Pair) - Get a new set of spacers and widen the stance of your vehicle - H&R - Audi Mercedes Benz Porsche

Get a new set of spacers and widen the stance of your vehicle affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
H&R - Corporate Logo
ES#:
2561830
Mfg#:
3655668
Ships in 3 Business Days
$129.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Wheel Spacer Kit - 15mm (1 Pair)

ES#3570113 - MS100158 - Wheel Spacer Kit - 15mm (1 Pair) - 15mm spacers to perfectly dial in your stance or clear your big brake kit! - APR - Audi Volkswagen

15mm spacers to perfectly dial in your stance or clear your big brake kit! Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
APR - Corporate Logo
ES#:
3570113
Mfg#:
MS100158
Ships on Oct 27, 2026
$129.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Polyurethane Front Sway Bar Bushing Set (26.5)

ES#4871668 - PFF3-204-26.5 - Performance Polyurethane Front Sway Bar Bushing Set (26.5) - Stiffer bushings allow sway bars to work at their fullest potential. For use with a 26.5mm sway bar. - Powerflex - Audi

Stiffer bushings allow sway bars to work at their fullest potential. For use with a 26.5mm sway bar. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Powerflex - Corporate Logo
ES#:
4871668
Mfg#:
PFF3-204-26.5
Ships in 1 Business Day
$51.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear V5 Slotted Brake Rotors - Set (256x22)

ES#4668255 - 8D0615601D-S - Rear V5 Slotted Brake Rotors - Set (256x22) - Precision manufactured for consistent stopping power during high performance driving. Featuring a matte black zinc coating for corrosion protection. - ECS - Audi

Precision manufactured for consistent stopping power during high performance driving. Featuring a matte black zinc coating for corrosion protection. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4668255
Mfg#:
8D0615601D-S
Ships in 5 Business Days
ON SALE! SAVE 10%
$287.99

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

$259.18 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

034Motorsport Short Shift Kit

ES#3560514 - 034-508-0000 - 034Motorsport Short Shift Kit - CAD-designed shifter for 012/016/01E transmissions, crafted from a mix of billet stainless steel, aluminum, and brass. - CNC-machined locally in the USA! - 034Motorsport - Audi

CAD-designed shifter for 012/016/01E transmissions, crafted from a mix of billet stainless steel, aluminum, and brass. - CNC-machined locally in the USA! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits models with 01E transmissions

Brand:
034Motorsport - Corporate Logo
ES#:
3560514
Mfg#:
034-508-0000
Back Ordered
$258.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Power Stop Euro-Stop Premium Front Brake Kit (320mm)

ES#3145704 - ESK886 - Power Stop Euro-Stop Premium Front Brake Kit (320mm) - An authentic OE-specification front-wheel braking solution featuring European-sourced pads, high-carbon smooth Geomet coated rotors, and strict ECE-R90 certification. - Power Stop - Audi

An authentic OE-specification front-wheel braking solution featuring European-sourced pads, high-carbon smooth Geomet® coated rotors, and strict ECE-R90 certification. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Power Stop - Corporate Logo
ES#:
3145704
Mfg#:
ESK886
Ships in 2 Business Days
$257.99 USD
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Parts & Upgrades

All the performance upgrade options from the best brands in the business to help build your dreams. Our performance parts catalog is the largest anywhere and constantly growing to keep your build on track.

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