Audi C7 RS6 Avant Stone Exhaust Valvetronic System in Cat-back

Audi C7 RS6 Avant w/ Stone Exhaust Dual Remote Control Valvetronic system in Catback

Making the 4.0-liter Biturbo V8 TFSI engine deeply roar!

I LOVE WAGON!!!

"The pursuit of quality perfection in the balance of sound and performance"

STONE Instagram 

https://www.instagram.com/stone.exhaust.official/

STONE YouTube 

https://www.youtube.com/channel/UCAwet67UUuUPJ2ICb_ZwnCA/featured?view_as=subscriber

https://www.youtube.com/watch?v=A3RfoW_CuaY

STONE Instagram 

https://www.instagram.com/stone.exhaust.official/

STONE YouTube

https://www.youtube.com/channel/UCAwet67UUuUPJ2ICb_ZwnCA/featured?view_as=subscriber