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The #1 power-adding bolt-on for your Audi 4.0T. The ARM 4.0T Inlets replace the restrictive OEM inlets to dramatically improve airflow to the turbos — so essential that most tuners require upgraded inlets for any tune above a base Stage 1. Install them and you eliminate the induction restriction, spool the turbos faster, build more low-end torque and make higher peak power.
Highlights
- Gains of up to 27 whp / 32 wtq.
- Faster turbo spool and improved sound.
- Direct replacement that supports Stage 2+ tuning.
- 63mm diameter for precise, maximum-flow fitment.
Construction
A 6-axis machining process produces the largest piping the space allows, holding a 63mm diameter throughout. The machined flanges transition to 63mm aluminum piping and 6-layer reinforced silicone couplers built to resist deformation on demanding builds. The inlets fit any turbo setup that uses the OEM inlets, and even improve on the smaller-diameter RS inlets.
Requires the ARM 4.0T Intake (these inlets do not include filters) — the intake places dual dry media filters (68 cu in each, 136 cu in total) deep in the passenger-side airbox cavity for the coolest air. Add the ARM 4.0T Heat Shield to keep intake temps lower still.
Fitment
Audi S6, S7 & RS7 (C7 and C7.5), 4.0T.
What's included: 2x inlets, 2x silicone hoses, 2x turbo O-rings, 4x turbo bolts, 2x clamps.
Backed by ARM Motorsports' lifetime warranty against defects in craftsmanship and fitment.
Ships from our Vancouver shop — KORE SPEED is proudly Canadian-owned, with no surprise cross-border duties for Canadian buyers. Questions on fitment? Email support@korespeed.com.
Pairs well with

Audi 4.0T Inlets - S6 S7 RS7
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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