Dinan Axle Back Free Flow Exhaust System | BMW X3 M/X4 M 2020-2022 }
Dinan Axle Back Free Flow Exhaust System | BMW X3 M/X4 M 2020-2022 }
Dinan Axle Back Free Flow Exhaust System | BMW X3 M/X4 M 2020-2022 }
Dinan Axle Back Free Flow Exhaust System | BMW X3 M/X4 M 2020-2022 }
Dinan Axle Back Free Flow Exhaust System | BMW X3 M/X4 M 2020-2022 }
Dinan Axle Back Free Flow Exhaust System | BMW X3 M/X4 M 2020-2022 }
Dinan Axle Back Free Flow Exhaust System | BMW X3 M/X4 M 2020-2022 }
Dinan Axle Back Free Flow Exhaust System | BMW X3 M/X4 M 2020-2022 }
PLEASE CALL OR TEXT (310)231-0292 WITH ANY QUESTIONS Description: Dinan Axle Back Free Flow Exhaust System BMW...
Vendor: Dinan
SKU: D660-0086
Product Type: Exhaust
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Dinan Axle Back Free Flow Exhaust System BMW F97 X3 M/ F98 X4 M

Dinan Axle Back Free Flow Exhaust System BMW F97 X3 M/ F98 X4 M 2020-2022. Axle Back Free Flow for your BMW F97 X3 M & BMW F98 X4 M model. Dinan axle back exhaust for BMW X3 M & BMW X4 M. Perfect Axle Back exhaust symmetrical design, with the raw muffler. 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.

In order to achieve the deep and throaty signature Dinan sound the system incorporates larger 76mm tubing (vs 70mm stock) that allows freer flow through the entirety of the system but specifically to both outer pipes when the enlarged valves are open. The resulting flow and sound mimics an awe-inspiring straight pipe solution with a deeper, fuller tone, a defining element of all Dinan exhausts. In contradiction to the aggressiveness resulting from open valves, when the valves are closed, all gasses are forced into the muffler for sound deadening and exit the two inner tips. Regardless of valve position, the intimate nature of the interior is retained so conversation can continue without an excessively loud drone courtesy of drone abatement technologies housed within the can. With the Dinan exhaust equipped on the X3M/X4M you get the best of both worlds; aggressive tone/sound and civility

Perhaps equally important to the sound of the installed Dinan axle back system are the resulting aesthetics. With a nearly perfect symmetrical design, the raw muffler and pipe routing are pleasing to the eye even when the matching proportions are only partially visible after install. The piping culminates into four massive 114mm (4.5") tips that fill up the previously spacious factory cut out in the valance without appearing to be oversized and unnatural. The imposing tips utilize a new tip design with an inverted clamp neck. The new style allows for two very important things to happen. The first is the ability to have a longer tip sleeve length without sacrificing real estate for a clamp neck thus allowing larger tips even when there is limited straight pipe to clamp on to. Secondly, the interior clamp neck means that the clamp itself is almost completely hidden from view for an unblemished install. 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.


  • More Power: +8 HP @ 6600 RPM, +6 FT-LB @ 6600 RPM.
  • Enjoyably louder, sportier sound
  • 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.
  • 100% 304 brushed stainless steel construction w/ TIG welding.
  • Larger diameter piping for increased flow (76mm vs 70mm).
  • 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.
  • 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.


This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.


BRAND :   Dinan
MAX HP GAIN   8 @ 6600 RPM
MAX TORQUE (lb-ft) GAIN   6 @ 6600 RPM
PRODUCT TYPE  Axle-Back Exhaust
EXHAUST TIPS  Stainless Steel - Polished Tips
WEIGHT :   72
WIDTH :   29
UPC :   813725029245
PART NUMBER :   D660-0086

Fitment Chart:

X3 M
F97 3.0L L6
BMW X4 M F98 3.0L L6 2020-2022

If you have any fitment questions, please feel free to reach out to our team via the contact methods below. If you are contacting us for any order status updates, please give us a call, or email us. We are a lean operation bringing you the best shopping experience possible. We are working on your orders as quickly as we can. We thank you for your patience.

Please reach out to us at (310) 231-0292 for sales inquiries if you are in the United States, Canada, Mexico.
For more in-depth product questions, fitment questions, product inquiries please email our performance specialists at online@autotalent.com.
All other inquiries:
Please direct your inquiries to the chat functionality on our website.

Returns Policy

If a product is ordered and not wanted, the UNUSED item can be returned for a 25% restocking fee unless otherwise specified. In some cases, we may offer the ability to return the item to us for a lesser restocking fee and then keep the balance as a store credit. To return an item, it must be in brand new condition with original packaging.

We cannot accept a return on special ordered or custom items.

Shipping is non refundable in either direction unless approved by AutoTalent. All items wanting to be return MUST be reported within 30 days of the original invoice date. No items will be returnable after 30 days. All products shipped from the AutoTalent facility are shipped via FedEx, USPS, or USPS. Some packages shipped from the manufacturer may or may not require signatures for package release.

Special Order Items

Some items may be special order specifically for the customer’s vehicle. These items generally require a deposit or paid in full. Once this deposit amount is notified to the customer and they agree to order the special order item, the deposit becomes non-refundable. These special order items cannot be returned or resold. Cancellations are not allowed on special order parts.

AutoTalent DOES NOT REFUND SHIPPING CHARGES. If you modify, install, or alter the item in any form, we cannot accept it as a return. We will not cover any expenses related to the product or installation, and you may be required to purchase a replacement.

** All cancellations that are requested that are NOT due to items not being in stock or delayed by the manufacturer are subject to a 5% processing fee. When you place an order with us we pay credit card fees that are NOT returned back to us. We will absorb these fees if we do not have the item in stock OR if you agree to the original ETA and that ETA is NOT met. If you decide to cancel for any other reason you will not receive this 5% fee back


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Please also note that the shipping rates for many items we sell are weight-based.


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