Dinan Free Flow Axle Back Exhaust For BMW M340i G20 - Polished Tips

The Dinan Axle Back Exhaust System provides the BMW M340i with increased performance and an enjoyably louder, sportier sound. Quad exhaust tips have been a signature feature of the most powerful letter in the automotive sphere for quite some time. It is a hallmark of the brand that Dinan has long embraced, limiting its own quad tip usage to those M cars that already sported like tip quantity from the factory. 

While some may scoff at the feature being implemented into a "pseudo-M," the M340i, and the B58 engine platform, are extremely potent and worthy of such a distinction. The factory valance also accommodates the four massive 102mm tips perfectly, further cementing our opinion that the quad tips were destined to be on this performance model. Being numerous and big are not the only selling points to the tips however. Dinan has retained its signature straight cut tip design, safeguarding its unique and elegant styling position amongst a crowded marketplace full of angle cuts. With systems available with either black ceramic coated or polished clamp-on, and laser engraved exhaust tips, there is a version that is sure to meet your individual aesthetic needs.

Features:

• More Power: + 6 HP @ 6600 RPM, + 5 LB-FT @ 6600 RPM
• Enjoyably louder, sportier sound
• Quad 4" diameter clamp-on, double-walled, polished and laser engraved exhaust tips
• 100% 304 stainless steel construction
• Larger diameter piping for increased flow (76mm vs 70mm)
• 4 lbs lighter than the stock system
• Stock exhaust valve actuator reused and another valve/actuator added to the opposing side promoting even flow regardless of valve position
• Computer controlled exhaust valves are retained and limit noise during low speed driving and open fully during high-load conditions
• Twin exhaust valves are a whopping 76mm diameter, making them 30% less restrictive than the OE valves
• Easy bolt-on installation with included mounting hardware