Armytrix Porsche 981 Cayman S/GTS/GT4 (2012-2016) valvetronic exhaust system
Unleash a deeper, more aggressive tone and unlock the full character of your naturally aspirated flat-six with the ARMYTRIX Valvetronic Exhaust System for the Porsche 981 Cayman series (2012–2016). Precision-engineered for Cayman / S / GTS / GT4 models, this dual-tip system transforms the 981 driving experience with dynamic acoustics, real-time valve control, and optimized exhaust flow for increased performance.
Designed for drivers who demand more—from sound, control, and response.
Fitment:
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Model: Porsche 981 Cayman
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Variants: Cayman / Cayman S / Cayman GTS / Cayman GT4
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Years: 2012–2016
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Engine Options: 2.7L / 3.4L / 3.8L Flat-6
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Drive Orientation: Left-Hand Drive & Right-Hand Drive supported
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Exhaust Configuration: Dual Tip system
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Control System: ARMYTRIX OBDII Control Module required
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Factory Exhaust Control: Remains functional if vehicle is equipped with OEM valve system
Performance Features:
Main Pipe Diameter: Dual 2.5” Mandrel-Bent Tubing
Improves exhaust velocity and reduces backpressure for sharper throttle response and more responsive acceleration
Dual 3.5” Exhaust Tips:
Two high-performance tips (available in various finishes) deliver a bold, aggressive visual and acoustic statement
Exclusive CEL Suppression Technology:
Built-in catalytic converter and OPF-related fault-code clearing mechanism minimizes the chance of Check Engine Lights (CEL), even when emissions components are modified or removed
Valvetronic Control via OBDII:
Take command of your exhaust tone with three selectable modes:
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Quiet Mode: Valves closed – subtle, refined tone for daily driving
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Race Mode: Valves open – full-bodied, high-performance sound with naturally aspirated roar
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Auto Mode: Adaptive behavior based on throttle input and engine load
Wireless Remote + Smartphone App:
Effortless valve control using the included remote or the ARMYTRIX mobile app (iOS/Android)
Plug-n-Play Installation:
OBDII-based control module streamlines installation and reduces setup time by up to 30% over traditional wired systems
Direct Bolt-On Fitment:
No cutting or fabrication required. System uses OEM mounting points for straightforward, professional-grade installation
What’s Included:
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ARMYTRIX Valvetronic Exhaust System (Cat-Back / Dual-Tip Version)
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Dual 3.5” Signature Exhaust Tips (Chrome, Matte Black, Burnt Blue, etc.)
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Wireless Remote Control Kit
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OBDII Plug-and-Play Valve Control Module
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Complete Mounting Hardware
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Digital Installation Instructions
System Compatibility Notes:
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Compatible with 2012–2016 Porsche 981 Cayman models
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Designed for Cayman / Cayman S / GTS / GT4 with dual-tip rear bumper
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Supports LHD and RHD configurations
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Retains OEM exhaust button functionality (if equipped)
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Professional installation recommended for optimal performance and reliability
More Than an Exhaust – It’s the Soul of Your 981
With the ARMYTRIX Valvetronic Exhaust System, your Porsche 981 doesn’t just drive better—it sounds and feels like the purpose-built machine it was meant to be. From weekend runs to daily commutes, this system delivers control, character, and the unmistakable voice of a true sports car.
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T&C's
T&C's
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.
Stock Availability
Stock Availability
Due to the high volume of custom orders and special requests we receive daily, it’s not always possible to have every item readily available in our warehouse at all times. While we strive to maintain stock for popular products, some items may require additional processing time. If you need a product urgently, we highly recommend reaching out to our sales team here before placing your order to confirm availability and estimated delivery times.
Please Note:
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Delivery & Returns
Delivery & Returns
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While we make every effort to ship your orders promptly, there may be unforeseen circumstances or stock availability issues that could cause delays. In such cases, a dedicated member of our sales team will personally reach out to you to inform you of any delays and provide updates on the status of your order.
Akrapovic Products Lead Time
Please note that for Akrapovic products, there may be a lead time of up to 10 working days depending on current stock levels. Our team will inform you promptly if your order falls within this category and provide you with an estimated delivery date.
Tracking Information
Once your order has been dispatched, we will provide you with a tracking number via email. Additionally, the tracking number will be added to your order notes on our website. This allows you to easily track the progress of your delivery and stay informed about its whereabouts until it reaches your doorstep.
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We are committed to providing you with the best possible delivery service, ensuring that your orders reach you in a timely manner and in pristine condition. If you have any questions or concerns regarding our delivery process, please don't hesitate to contact us for assistance.
For information regarding Returns, please refer to our T&C's.
Email: Store@avontuning.co.uk
Phone: 01454 800 117
Online we currently accept payment from the methods listed above including a wide range of finance options.
Finance Options
In order to get the kit you want, when you need it, without ruining the family finances we offer a highly flexible range of finance options to help you get the best products on your vehicle now rather than at the end of the season when you've saved up the cash to make the purchase. There are even interest free options which effectively spread the cost without costing you any extra.
Avon Tuning Limited is an Introducer Appointed Representative of Social Money Limited t/a Payl8r who is authorised by the FCA under Ref. Number 675283. Credit is subject to creditworthiness and affordability assessments. Missed payments may affect your credit file, future borrowing and incur fees.
What Our Customers Are Saying
Mark W.
“Thanks to James and Marcus at Avon Tuning for arranging and fitting a Quicksilver exhaust to my new Defender V8. Everything went like clockwork and it sounds awesome”
Paris C.
"Would highly recommend Avon Tuning. They're extremely knowledgeable, outstanding customer service - we even had a lovely courtesy car for the few hours they had ours. You're in good hands with Avon Tuning!"
Richard N.
"I’d give 6 stars if they’d let me! Avon Tuning did the most fantastic job. I arranged everything with James at the beginning and he was so helpful, guiding me to the correct exhaust system (Miltek) and a Stage 1 Remap"
Peter B.
"Amazing service from James and the team at Avon Tuning.Fitted a new exhaust system on my Aston Martin Vantage, not only does it sound and look great but it puts smiles per miles for me."
