40 Series Performance Muffler Oil Coolers Our sealed system delivers as

Our sealed system delivers as much cold outside air as possible to the engine via an optimized carbon fiber tube that mimics the stock pipe but with less resistance with a straighter freer flowing design

Who else do you want to tune your BMW if not the company that beats the competition in power and durability in the most competitive road racing circuit in the U

In its place Dinan introduces straight through mandrel bent 2

and an improved throaty sound

40 Series Performance Muffler Oil Coolers Our sealed system delivers asMuffler Original 40 Series 2. 5 in Offset Inlet 2. 5 in Offset Outlet 13. 25 x 9. 5 x 4 in Oval Body 19. 4 in Long Steel Black Paint Universal Each