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Audi S4 Performance Parts & Upgrades

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Transmission Street Shield Skid Plate Hardware Kit

ES#3470642 - 017881ecs01KT2 - Transmission Street Shield Skid Plate Hardware Kit - Replacement hardware kit for your ECS Transmission Street Shield - ECS - Audi

Replacement hardware kit for your ECS Transmission Street Shield 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
ECS - Corporate Logo
ES#:
3470642
Mfg#:
017881ECS01KT2
In Stock
ON SALE! SAVE 10%
$124.99

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

$112.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4/S4 A5/S5 RS5 Front Adjustable Sway Bar

ES#4027361 - 022847ecs01KT - Audi B9 A4/S4 A5/S5 RS5 Front Adjustable Sway Bar - Reduce body roll and enhance handling! - ECS - Audi

Reduce body roll and enhance handling! 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
ECS - Corporate Logo
ES#:
4027361
Mfg#:
022847ECS01KT
Ships on Mar 8, 2027
ON SALE! SAVE 10%
$374.81

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

$337.33 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Wheel Spacer Flush Fit Kit - Black Bolts

ES#4476494 - B8S4FLUSHKT - Wheel Spacer Flush Fit Kit - Black Bolts - Includes spacers & Black bolts to obtain a flush look on your OE 19" 'Peeler' style wheels - Assembled By ECS - Audi

Includes spacers & Black bolts to obtain a flush look on your OE 19" 'Peeler' style wheels 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Assembled By ECS - Corporate Logo
ES#:
4476494
Mfg#:
B8S4FLUSHKT
Ships on Nov 17, 2026
ON SALE!
$356.99

This product was last offered at the strikethrough price on
07-01-2026

$336.08 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Turbosmart Gen-V Race Port BOV - Blue

ES#4007245 - TS-0204-1131 - Turbosmart Gen-V Race Port BOV - Blue - The Race Port is famous for being an amazingly small and light BOV for turbocharged competition level engines - TurboSmart - Audi Volkswagen

The Race Port is famous for being an amazingly small and light BOV for turbocharged competition level engines Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
*General use blow off valve for custom big turbo applications - Not a direct fit valve*

Brand:
TurboSmart - Corporate Logo
ES#:
4007245
Mfg#:
TS-0204-1131
In Stock at Vendor
$335.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

M14 Titanium Wheel Stud Kit - Burnt - Set Of 20

ES#4487741 - TISTUD20145BURN - M14 Titanium Wheel Stud Kit - Burnt - Set Of 20 - M14x1.5x75mm with conical nuts - Vargas Turbo Technologies - Audi Volkswagen

M14x1.5x75mm with conical nuts 2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Vargas Turbo Technologies - Corporate Logo
ES#:
4487741
Mfg#:
TISTUD20145BURN
Ships on Nov 10, 2026
$335.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Compression Dropping Head Gasket - 1.0 Drop

ES#3662203 - 034-201-3113 - Compression Dropping Head Gasket - 1.0 Drop - OEM quality, MLS headgasket with increased thickness to drop compression in all hydraulic-lifter 10v and 20v 5 cylinder motors with up to 82mm bore. - 034Motorsport - Audi

OEM quality, MLS headgasket with increased thickness to drop compression in all hydraulic-lifter 10v and 20v 5 cylinder motors with up to 82mm bore. 2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
034Motorsport - Corporate Logo
ES#:
3662203
Mfg#:
034-201-3113
Ships in 3 Business Days
$334.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Silicone Throttle Body Boot - Red

ES#2954074 - 034-112-6007-RED - Silicone Throttle Body Boot - Red - Replaces the troublesome and weak "Y" boot - Includes clamps - 034Motorsport - Audi

Replaces the troublesome and weak "Y" boot - Includes clamps 2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
034Motorsport - Corporate Logo
ES#:
2954074
Mfg#:
034-112-6007-RED
Back Ordered
$111.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Wheel Spacer Kit - 10mm (1 Pair)

ES#3570121 - MS100166 - Wheel Spacer Kit - 10mm (1 Pair) - 10mm spacers to perfectly dial in your stance or clear your big brake kit! - APR - Audi

10mm spacers to perfectly dial in your stance or clear your big brake kit! Call In Or Chat For Best Price! Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
APR - Corporate Logo
ES#:
3570121
Mfg#:
MS100166
Ships on Nov 19, 2026
ON SALE! SAVE 10%
$122.99

This product was last offered at the strikethrough price on
09-28-2026

$110.66 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Rear Sway Bar End Links

ES#3183670 - MRS-AU-0130 - Performance Rear Sway Bar End Links - Replace the flimsy stock plastic and rubber units - Megan Racing - Audi

Replace the flimsy stock plastic and rubber units Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Megan Racing - Corporate Logo
ES#:
3183670
Mfg#:
MRS-AU-0130
Ships in 5 Business Days
$165.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Exact-Fit Stainless Steel Brake Lines

ES#3410499 - 019318ECS02 - Rear Exact-Fit Stainless Steel Brake Lines - Rear set of DOT-compliant lines for an improved pedal feel - ECS - Audi

Rear set of DOT-compliant lines for an improved pedal feel 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
ECS - Corporate Logo
ES#:
3410499
Mfg#:
019318ECS02
In Stock
$109.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

034Motorsport Coil Pack Hold-Down Bracket Kit

ES#4147794 - 034-107-Z032 - 034Motorsport Coil Pack Hold-Down Bracket Kit - Keep your upgraded 2.0T style coil packs cool and seated with the 034Motorsport Coil Pack Hold-Down Bracket Kit for Audi B5 S4/RS4 & C5 A6/Allroad 2.7T vehicles! - 034Motorsport - Audi

Keep your upgraded 2.0T style coil packs cool and seated with the 034Motorsport Coil Pack Hold-Down Bracket Kit for Audi B5 S4/RS4 & C5 A6/Allroad 2.7T vehicles! 2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
*Does not include Conversion harness or 2.0T Coil Packs - This product will not work with 2.7T plastic valve covers.*

Brand:
034Motorsport - Corporate Logo
ES#:
4147794
Mfg#:
034-107-Z032
Ships in 3 Business Days
$329.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

APR Wheel Spacer Kit With Lug Bolts - 10mm Thick - 66.5mm CB - 37mm Bolts

ES#5504916 - KT100020 - APR Wheel Spacer Kit With Lug Bolts - 10mm Thick - 66.5mm CB - 37mm Bolts - 10mm spacers to perfectly dial in your stance or clear your big brake kit! Includes 10 wheel bolts. - APR - Audi

10mm spacers to perfectly dial in your stance or clear your big brake kit! Includes 10 wheel bolts. Call In Or Chat For Best Price! Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
APR - Corporate Logo
ES#:
5504916
Mfg#:
KT100020
Ships on Nov 19, 2026
ON SALE! SAVE 10%
$181.99

This product was last offered at the strikethrough price on
09-28-2026

$163.71 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Polyurethane Rear Differential Mount - Red (Street)

ES#4701580 - ELA-10-275 - Polyurethane Rear Differential Mount - Red (Street) - Eliminate excessive rear differential movement! - Verkline - Audi

Eliminate excessive rear differential movement! Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Verkline - Corporate Logo
ES#:
4701580
Mfg#:
ELA-10-275
Back Ordered
$325.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

BFI Wheel Spacers - 8mm (Pair)

ES#3575932 - SP204GB - BFI Wheel Spacers - 8mm (Pair) - Exclusively built for your 57.1mm centerbore VW/Audi. Black Anodized - Black Forest Industries - Audi Volkswagen

Exclusively built for your 57.1mm centerbore VW/Audi. Black Anodized Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Black Forest Industries - Corporate Logo
ES#:
3575932
Mfg#:
SP204GB
Ships on Nov 17, 2026
$64.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Lower Control Arm Bushing Set - Inner

ES#3175221 - 140916-3H - Front Lower Control Arm Bushing Set - Inner - Upgrade to a more engaging driving experience - 2 axis camber / self-aligning - KMAC - Audi

Upgrade to a more engaging driving experience - 2 axis camber / self-aligning Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
For the straight control arm

Brand:
KMAC - Corporate Logo
ES#:
3175221
Mfg#:
140916-3H
Special Order: No Guaranteed ETA
$320.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Wheel Spacer & Bolt Kit - 12.5mm with Ball Seat Bolts

ES#2863230 - 002403ECS02AKT - Wheel Spacer & Bolt Kit - 12.5mm with Ball Seat Bolts - Includes everything you need to install spacers on two wheels - ECS - Audi Volkswagen

Includes everything you need to install spacers on two wheels 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
ECS - Corporate Logo
ES#:
2863230
Mfg#:
002403ECS02AKT
In Stock
ON SALE! SAVE 25%
$210.99

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

$158.24 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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