Product Details
Description
The F8x M3/M4's are an audible treat right off the showroom. Coupled with a Dinan exhaust however they become a symphony of aural delight that even the most discerning ear will find pleasing.
Dinan's Free Flow axle-back exhaust system features 100% stainless steel construction measured to exact specifications to ensure proper fit via factory hangers and mounting points. Dyno tuned for maximum exhaust flow with minimum backpressure, this system is designed to provide a more aggressive sound under acceleration, while reducing the drone inside the vehicle, thanks to computer-controlled valves that limit noise during low-speed driving and open fully during high-load conditions to allow free flow. The exhaust gasses exit through larger laser engraved polished, or ceramic black, quad tips.
Every Dinan product comes with our industry-exclusive factory matching new car bumper to bumper warranty and is designed and tested in Morgan Hill, California, and can be purchased and installed at any Dinan Approved BMW dealership nationwide.
Sound Clips:
Stock Sound Vs Dinan Free Flow Axle-Back Sound
Product Features
- More Power: +5 HP
- Drone abatement technologies used to reduce cabin resonance
- Enjoyably louder, sportier sound
- Quad 3.5" black ceramic coated, or polished stainless, laser engraved exhaust tips
- Computer-controlled valve limits noise during low-speed driving; valve opens fully during high-load conditions to allow free flow
- Stock exhaust valve actuators are reused
- The operation of the exhaust valve is unchanged so the exhaust tone can be adjusted via the M-Drive settings.
- Dinan exhaust is 3 lbs lighter than stock
- Twin secondary exhaust valves with a whopping 76mm diameter, making them 45% less restrictive than the OE valves.
- 100% 304 stainless steel construction
- Uses the factory brackets and hangers for a factory-like fitment
installation
warranty
Warranty Varies By Vehicle Warranty & Product Type
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