40 Series Performance Muffler Oil Coolers and no downside by upgrading

and no downside by upgrading to the Dinan High-Performance Intercoolers for the N63 twin-turbo V8

Exhaust System - Force II - Cat-Back - 3 in Diameter - Single Side Exit - 3

Dinan engineers designed the F30 340i and F32 440i exhaust to improve exhaust flow by reducing back pressure

Resonator - HP-2 - 2 in Center Inlet - 2 in Center Outlet - 12 x 5 x 4 in Oval Body - 18 in Long - Stainless - Natural - Each

Exhaust System - Xtreme - Cat-Back - 3

40 Series Performance Muffler Oil Coolers and no downside by upgradingMuffler Original 40 Series 3 in Offset Inlet 3 in Offset Outlet 13 x 9. 75 x 4 in Oval Body 19 in Long Steel Black Paint Universal Each