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Audi Stage 4 Brake Kits

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ECS "Stage 4" Front Big Brake Kit - B5/B6/B7/C5

ES#1896 - B5S4S4BBKRXS - ECS "Stage 4" Front Big Brake Kit - B5/B6/B7/C5 - Enhance braking performance with this plug-and-play upgrade! Featuring massive 6-piston calipers, lightweight 2-piece brake rotors, and all components needed for installation. - ECS - Audi

Enhance braking performance with this plug-and-play upgrade! Featuring massive 6-piston calipers, lightweight 2-piece brake rotors, and all components needed for installation. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
1896
Mfg#:
B5S4S4BBKRXS
In Stock
ON SALE!
$2039.99

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

$1937.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Front Big Brake Kit - Stage 4 - 2-Piece Rotors (380x34)

ES#2785042 - 003883ECS02KT - Front Big Brake Kit - Stage 4 - 2-Piece Rotors (380x34) - Featuring Black RS5 8-piston calipers, ECS stainless steel lines & Hawk HPS pads - ECS - Audi

Featuring Black RS5 8-piston calipers, ECS stainless steel lines & Hawk HPS pads 10X Entries For Our 25th Anniversary Sweepstakes!
Please download the installation template to confirm this brake kit will fit behind your factory or after

Brand:
ECS - Corporate Logo
ES#:
2785042
Mfg#:
003883ECS02KT
Ships on Dec 2, 2026
Auto Notify
$4415.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Front Cross-Drilled & Slotted 2-Piece Brake Rotors - Pair (380x34)

ES#2804479 - 003883ECS01A01KT - Front Cross-Drilled & Slotted 2-Piece Brake Rotors - Pair (380x34) - Replacement set for 380mm Stage 3-4 Big Brake Kits with Audi RS calipers - ECS - Audi

Replacement set for 380mm Stage 3-4 Big Brake Kits with Audi RS calipers 10X Entries For Our 25th Anniversary Sweepstakes!
*Replacement rotor set for customers that have our Stage 3/4 380mm kits with Audi RS Calipers*

Brand:
ECS - Corporate Logo
ES#:
2804479
Mfg#:
003883ECS01A01KT
In Stock
ON SALE!
$1229.99

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

$1193.09 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Big Brake Kit - Stage 4 - 2-Piece Rotors (380x34)

ES#3183941 - 003883ecs01KT3 - Front Big Brake Kit - Stage 4 - 2-Piece Rotors (380x34) - Featuring ECS 380mm 2-piece rotors, ECS Stainless lines, and caliper brackets - Excludes calipers - ECS - Audi

Featuring ECS 380mm 2-piece rotors, ECS Stainless lines, and caliper brackets - Excludes calipers 10X Entries For Our 25th Anniversary Sweepstakes!
For customers that already sourced their own 8-piston RS5 calipers

Brand:
ECS - Corporate Logo
ES#:
3183941
Mfg#:
003883ECS01KT3
Ships on Dec 2, 2026
Auto Notify
ON SALE!
$1815.99

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

$1761.51 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Front Big Brake Upgrade Kit - Stage 4 - 2-Piece Rotors (380x34)

ES#3221135 - 003883ecs01ktKT4 - Front Big Brake Upgrade Kit - Stage 4 - 2-Piece Rotors (380x34) - Everything necessary to upgrade your stage-3 RS caliper 365mm kit to the stage-4 380mm kit. - ECS - Audi

Everything necessary to upgrade your stage-3 RS caliper 365mm kit to the stage-4 380mm kit. 10X Entries For Our 25th Anniversary Sweepstakes!
For customers with existing 365mm ECS Stage 3 Brake Kit with Audi RS5 Calipers

Brand:
ECS - Corporate Logo
ES#:
3221135
Mfg#:
003883ECS01KTKT4
Ships on Dec 2, 2026
Auto Notify
ON SALE!
$1676.99

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

$1626.68 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Cross Drilled & Slotted 2-Piece Brake Rotors - Pair (380x38)

ES#2825795 - 003755ecs01a1KT - Front Cross Drilled & Slotted 2-Piece Brake Rotors - Pair (380x38) - Replacement rotors for Stage 4 Big Brake Kit (ES2825794 & ES3221498) - ECS - Audi

Replacement rotors for Stage 4 Big Brake Kit (ES2825794 & ES3221498) 10X Entries For Our 25th Anniversary Sweepstakes!
*Replacement rotor set for customers that have our Stage 3/4 380mm kits with Porsche 19Z calipers*

Brand:
ECS - Corporate Logo
ES#:
2825795
Mfg#:
003755ECS01A1KT
In Stock
ON SALE!
$1383.99

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

$1342.47 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Big Brake Kit - Stage 4 - 2-Piece Cross Drilled & Slotted Rotors (352x32)

ES#3082393 - B5S4S4BBKRXSKT - Front Big Brake Kit - Stage 4 - 2-Piece Cross Drilled & Slotted Rotors (352x32) - For customers with existing 18z calipers, brake pads, & fluid - ECS - Audi

For customers with existing 18z calipers, brake pads, & fluid 10X Entries For Our 25th Anniversary Sweepstakes!

Does not include calipers, brake pads, or brake fluid

Brand:
ECS - Corporate Logo
ES#:
3082393
Mfg#:
B5S4S4BBKRXSKT
In Stock at Vendor
ON SALE!
$1305.99

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

$1240.69 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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