BMW M3 exhaust
AFE MSRP: $2619.75
aFe has released its Mach-Force XP exhaust system for the E90/92/93 M3. Constructed from 3'' polished T304 stainless steel, it utilizes a dual 3'' torque chamber designed to allow a broad torque band and cancel high frequency sound waves. The system is said to be 20 lb lighter than stock and in aFe's testing they claim it produced gains of up to 13hp and 16 lb-ft of torque.