The "baby M's" of the 'X' family just got a bit more big brother like. With more volume and a deeper, more aggressive note courtesy of the Dinan axle back exhaust system, the F97/F98 now stand on the precipice of rivaling, or even surpassing, its V8 siblings --- at least, in regards to sound. With an intoxicating and menacing sound befitting of a high performance SUV the X3M/X4M holds its own amongst the pantheon of more traditional M's.

• 100% 304 brushed stainless steel construction w/ TIG welding.
• 5 lbs lighter than the stock system.
• Computer controlled exhaust valves retained, limiting noise during low speed driving and opening fully during high-load conditions.
• Easy bolt-on installation with included mounting hardware.
• Enjoyably louder, sportier sound
• Larger diameter piping for increased flow (76mm vs 70mm).
• More Power: +8 HP @ 6600 RPM, +6 FT-LB @ 6600 RPM.
• Quad 4.5" (114mm) diameter clamp-on, double-walled, polished and laser engraved exhaust tips.
• Tuck-it tip design ensures a nearly flawless and unencumbered visual appearance.
• Twin exhaust valves are a whopping 76mm diameter, making them 30% less restrictive than the OE valves.