Dinan Valved Axle-Back Exhaust System | BMW G80 M3 / G82 M4

Dinan's valved axle-back system for the G8x M3/M4 improves engine performance and sound quality, reducing backpressure and adding power.

• The description claims the system improves engine performance and sound quality.
• The description claims larger piping reduces backpressure and unlocks additional horsepower and torque.
• The description claims the system is built from T304 stainless steel and features quad 4.5-inch polished tips.
• The description claims the system is 6 pounds lighter than stock.