Up to 25% Off Audi B9 A4 ECS Essentials
It all starts with the essentials - Do it right, or do it twice.
ECS Essentials are a special blend of upgrades designed to fine tune, enhance appearance, or improve the performance of your Audi. From interior to exterior here is a list of our hottest products to help you achieve the next level.
Build it faster, build it stronger, build it with ECS.
Performance in Mind
Fits:
Audi B9A4
Adjustable Front Sway Bar End Link Set - Audi B8/Porsche Macan
Attaches sway bar to control arm, adjustable to increase clearance between sway bar and axles. Offers just under 2" of adjustability!
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Brand:
ES#:
3176605
Mfg#:
003112ECS01
Billet Aluminum Front Strut Brace - Audi B9 A4/A5/S4/S5/RS5
Provides additional support to the strut towers for flex reduction to enhance your driving experience
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Brand:
ES#:
3188267
Mfg#:
019218ECS01
Manifold Port Boost Tap Kit
Installs in the unused port of the intake manifold. Features three vacuum ports for multiple boost / vacuum references.
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Brand:
ES#:
3136138
Mfg#:
013576ECS01KT2
Throttle Body Boost Tap Kit
Installs between the throttle body and intake manifold. Features two vacuum ports for multiple boost / vacuum references.
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Brand:
ES#:
3136139
Mfg#:
005942ECS01KT2
Carbon Fiber Mirror Cap Set - Audi B9 A4/A5/S4/S5
Upgrade your exterior look
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Brand:
ES#:
3411933
Mfg#:
024564ECS02
Carbon Fiber Mirror Cap Set - Audi B9 A4/A5/S4/S5
With Lane Change Assist
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Brand:
ES#:
3411932
Mfg#:
024564ECS01
Front & Rear Exact-Fit Stainless Steel Brake Lines - Kit
Complete set of DOT-compliant lines for an improved pedal feel
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Brand:
ES#:
3171190
Mfg#:
019318ECS01KT
Rear Bumper Reflector Film set - Gunsmoke
Pre-cut Lamin-X film to cover both reflectors on the rear bumper cover
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Brand:
ES#:
3149378
Mfg#:
020796ECS01A
ECS Wheel Spacers - 5mm (Pair)
Get the right size wheel spacer for your vehicle
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Brand:
ES#:
2167469
Mfg#:
002411ECS01A05KT
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Availability:
Ships on Jul 9, 2026
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Ships on Jul 9, 2026