Description
***NOT VERIFIED TO FIT GRAN COUPE, SPORT WAGON, OR CONVERTIBLE MODELS****
Upgrade your BMW M340i or M440I with the Dinan Free Flow Axle-Back Exhaust system designed specifically for the G20 M340i. Quad exhaust tips have long been a signature feature of the most powerful vehicles in the automotive industry, and now Dinan brings this distinctive design to the M340i. Embracing the heritage of the brand, Dinan has incorporated quad tips into the M340i, enhancing its visual appeal and distinguishing it as a performance model deserving of this feature.
While some may question the implementation of quad tips on a "pseudo-M" like the M340i, it's important to recognize the immense power and capabilities of the B58 engine platform. The factory valance of the M340i perfectly accommodates the four massive 102mm tips, further solidifying our belief that this performance model was destined to showcase the quad tip design. However, the appeal of the quad tips extends beyond their size. Dinan's signature straight cut tip design sets it apart from competitors offering angle cuts, providing a unique and elegant styling position.
The introduction of quad tips posed additional challenges and spurred innovation in the construction of the Dinan axle-back exhaust system. Built entirely of TIG welded and brushed T304 stainless steel, the system offers exceptional durability and visual appeal. Unlike the factory system, which employs only one exhaust valve and closes off the passenger side tip for quieter operation, the Dinan exhaust incorporates a second valve to achieve symmetry and optimize sound performance. With larger 76mm tubing compared to the stock 70mm, the Dinan system facilitates freer flow throughout, particularly when the enlarged valves are open. The resulting sound and flow closely resemble that of a straight pipe solution, producing a deep and meaty tone that defines all Dinan exhausts.
Contrary to the aggressiveness exhibited when the valves are open, the closed valve position directs all exhaust gases into the muffler, minimizing noise for a more subdued experience. The two inner tips serve as the exit points in this mode. Thanks to advanced drone abatement technologies, the Dinan exhaust system maintains an intimate cabin environment, allowing for uninterrupted conversations without excessive noise intrusion. The M340i equipped with the Dinan exhaust offers the best of both worlds: an aggressive tone and sound when desired, as well as civility for everyday driving. This combination embodies the essence of any M exhaust, now elevated further by the addition of quad tips to the M340i.
Key Features:
- Increased Power: +6 HP @ 6600 RPM, +5 LB-FT @ 6600 RPM
- Enjoyably louder, sportier sound
- Quad 4" diameter clamp-on, double-walled, ceramic black, and laser engraved exhaust tips
- Constructed with 100% 304 stainless steel for superior durability
- Larger diameter piping (76mm vs. 70mm) for enhanced flow
- 4 lbs lighter than the stock system, reducing overall weight
- Retains the stock exhaust valve actuator while adding another valve/actuator to promote even flow regardless of valve position
- Computer controlled exhaust valves limit noise during low-speed driving and fully open during high-load conditions
- Twin exhaust valves with a whopping 76mm diameter, 30% less restrictive than OE valves
- Easy bolt-on installation using included mounting hardware
Upgrade your BMW M340i or M440I with the Dinan Free Flow Axle-Back Exhaust and unlock the true potential of your vehicle. Experience increased power, a sportier sound, and head-turning aesthetics with the quad exhaust tips. Made from high-quality materials and engineered for optimal performance, this exhaust system is a testament to Dinan's commitment to excellence in the automotive aftermarket. Take your driving experience to the next level with Dinan and join the illustrious family of enthusiasts who demand the best.
Install Guide
