Audi 4M RS Q8 Quattro 4.0T
Increase HP/TQ and activate a full race exhaust with the flip of a switch, with our ECS Vacuum-Actuated Exhaust Cutout
10X Entries Into Our F80 M3 Sweepstakes
Control your exhaust valves with the click of a button! Includes a standalone vacuum pump, wiring, vacuum hose, and controllers.
10X Entries Into Our F80 M3 Sweepstakes
10X Entries For Our Spin To Win Sweepstakes!
This product was last offered at the strikethrough price on
06-13-2026
Lifetime Replacement
Increase HP/TQ and activate a full race exhaust with the flip of a switch, with our ECS Vacuum-Actuated Exhaust Cutouts
10X Entries Into Our F80 M3 Sweepstakes
Choose between a 2.5" or 3.0" valved mufflers to complete your custom exhaust.
10X Entries Into Our F80 M3 Sweepstakes
Light-weight titanium exhaust with a wonderful growl!
Lifetime Replacement
Stainless Steel exhaust tips featuring swivel attachments for maximum adjustability. 2.5" Swivel Inlet / 4.0" Double Wall, Slant Cut Outlet
10X Entries Into Our F80 M3 Sweepstakes
Not vehicle specific. You MUST measure prior to purchasing!
This product was last offered at the strikethrough price on
06-13-2026
Lifetime Replacement
3.00" Stainless steel, No Cutting Required and Fits with OE Tips
This product was last offered at the strikethrough price on
08-17-2026
Lifetime Replacement
3.00" Stainless, Non-Resonated (Louder) - No Cutting Required - Fits with OE Trims
*For 2020+ RSQ8 4.0 V8 Bi-Turbo (OPF / GPF Equipped Models)*
This product was last offered at the strikethrough price on
08-17-2026
Lifetime Replacement
Full length T304 stainless steel exhaust system that's sure to turn heads!
Call In Or Chat For Best Price!
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
09-08-2026
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
2.5" Clamp-on Inlet / 4.0" Single Wall, Slant Cut Outlet
10X Entries Into Our F80 M3 Sweepstakes
Not vehicle specific. You MUST measure prior to purchasing!
This product was last offered at the strikethrough price on
05-02-2026
Lifetime Replacement
2.5" Clamp-on Inlet / 4.0" Single Wall, Slant Cut Outlet
10X Entries Into Our F80 M3 Sweepstakes
Not vehicle specific. You MUST measure prior to purchasing!
This product was last offered at the strikethrough price on
06-13-2026
Lifetime Replacement
This is the best bolt-on modification that will increase exhaust flow, improve turbocharger spool time and drastically change the sound of your sport SUV.
Requires Stage 2 ECU Remap
This product was last offered at the strikethrough price on
08-26-2026
Lifetime Replacement
2.5" Inlet - 3.5" Outlets - 1x1 Carbon Fiber Sleeves
Double wall stainless steel. Single 2.25" inlet, Dual 3" outlet.
Lifetime Replacement
