Valvetronic Designs Valved Catback Exhaust System - 2017–2020 Audi TT RS (8S)
This Valvetronic Designs system is a 3" T304 stainless valved catback for the Audi TT RS, built around a rear Y-section that changes shape with the valve position. Valves open route straight through to the tips; valves closed route through a quad-chamber center muffler instead. It's a genuinely different mechanism from a simple bypass valve, and it's what gives the car its two distinct personalities.
Valve actuation is OEM-style electronic, compatible with the OEM Audi valve control, so there's no separate remote or controller to add. It's a 100% bolt-on, reversible replacement for the factory catback.
Features
- 3" T304 stainless steel, front to rear
- Rear Y-section: straight through open, quad-chamber muffler closed
- Fully mandrel-bent tubing, precision TIG welds
- OEM-style electronic valve actuation, compatible with OEM valve control
- Black OEM-style tips
- 100% reversible to factory
What's Included
- 3" T304 stainless valved catback system
- Rear Y-section with quad-chamber center muffler
- OEM-style electronic valves
- All required clamps and hardware
Reused from your vehicle: this system uses OEM-style electronic valve actuation compatible with the OEM Audi valve control, so no extra remote or controller ships with it.
Required but not included: this system bolts to your OEM or an aftermarket downpipe; downpipes are not included.
Product Specifications
- Fitment: for the Mk3 TT RS, 2017–2020
- Material: T304 stainless steel
- Diameter: 3", front to rear
- Design: rear Y-section with quad-chamber center muffler
- Weight saving: 14.8 lb, per Valvetronic Designs
- Valve control: reuses OEM-style electronic valve actuation
- SKU: V044 AUD.MK3.VSES.BR
- MPN: AUD.MK3.VSES.BR
Need a Valvetronic Designs System for a Different Audi?
Frequently Asked Questions
Which Audi is this system built for?
Valvetronic Designs publishes this system specifically for the Mk3 TT RS (2017-2020).
Do I need a separate remote for the valves?
No. This system uses OEM-style electronic valve actuation that's compatible with the factory Audi valve control.
What changes between valve open and valve closed?
The rear Y-section routes straight through to the tips when open, and through a quad-chamber center muffler when closed, giving two distinct tones from the same system.
Does this include the downpipes?
No. This system bolts to your OEM or an aftermarket downpipe; downpipes are sold separately.
What years does this cover?
Valvetronic Designs publishes 2017–2020 for the Mk3 TT RS. If you're unsure whether your specific model year is covered, contact your BMP Tuning rep.