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 YOUKU

https://i.youku.com/i/UNTQzNDA5NTI0/videos?spm=a2hzp.8244740.0.0

https://v.youku.com/v_show/id_XNDQ0NzI1NTg0OA==.html?spm=a2h3j.8428770.3416059.1

STONE Instagram 

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

STONE YOUKU

https://i.youku.com/i/UNTQzNDA5NTI0/videos?spm=a2hzp.8244740.0.0