CTS Turbo High-flow Intake (6″ Velocity Stack) B9 Audi A4, A5, S4, S5, RS4, RS5

CTS Turbo CTS Turbo High-flow Intake (6″ Velocity Stack) B9 Audi A4, A5, S4, S5, RS4, RS5

CTS Turbo High-flow Intake (6″ Velocity Stack) B9 Audi A4, A5, S4, S5, RS4, RS5

Product Code: CTS0043

Product Description

CTS Turbo are proud to annoucence a new intake system for the B9 Audi A4, AllRoad, A5, S4, S5, RS4, RS5 (2017-2019 models)

A system was designed to work in conjunction with the OEM air scoop to seamlessly force cold air into the air intake system. Air then flows through our high flow 6″ velocity stack air filter for maximum engine performance.

The single-piece proprietary moulded silicone couplers allows for smooth entry of air into the engine providing peak power gains ranging from 10-12HP on a stock car.

All of the components included in the CTS air intake system work flawlessly together to provide increased horsepower and torque throughout the entire power band and an aggressive race-inspired sound. Turbo spool up and diverter valve release are a lot louder!


  • Massive 6″ velocity stack filter, largest on the market

  • 3.5″ silicone turbo inlet hoses for both 4-cylinder and 6-cylinder engines (5-ply construction, will not collapse)

  • Heatshield to keep air temperatures as low as possible

  • Easy install and perfect fitment

  • Increased engine performance, less turbo lag

  • Sporty sound under acceleration and loud pressure release

  • Gains of 10-12HP on stock vehicles, tuned cars will gain even more!

  • Kit comes with parts to install on 1.8T, 2.0T, 2.9T and 3.0T engines (fits MAF-LESS cars)


  • B9 A4 (2017 – current)

  • B9 AllRoad (2017 – current)

  • B9 S4 (2018 – current)

  • B9 A5 (2018 – current)

  • B9 S5 (2018 – current)

  • B9 RS4 (2018 – current)

  • B9 RS5 (2018 – current)

Does not fit cars with MAF sensor.

Delivery Info


UK mainland delivery from FREE

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Place your order before 4pm Monday to Thursday for estimated next working day delivery. Estimated delivery for orders placed after 4pm on Thursday, up to 4pm Friday, is Monday (excluding bank holidays). Estimated delivery for all orders placed over a weekend is Tuesday.


All purchases on this website our subject to our Terms and Conditions. Please ensure you have read and understood these before making a purchase. If you have any questions, please feel free to contact us and we will endeavour to answer any questions you may have. 

PLEASE BE AWARE: Sports cats can NOT legally be installed on a vehicle for use on a public road that was manufactured after 1st March 2001 unless type ECE 103R approved - this can be identified in either the product description and/or in the Technical Information section listed. If you have any doubt on this approval, please contact us immediately for confirmation. Fitting a De-Cat/Cat Bypass, DPF delete/bypass or GPF delete/bypass to a vehicle that is to be used on UK roads will cause the vehicle to fail the MOT emissions test, therefore rendering it unroadworthy and illegal to be used on the road. Therefore, any such products are strictly sold as off-road or motorsport use only and NOT for road use. The vehicle should be transported from place to place via a trailer, flatbed or other recovery means.


Returns Policy

Please refer to our T&C's for information on our returns policy.