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- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 12 - Jul 17
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Description
Dinan Free Flow Axle-Back Exhaust for 2012-2016 BMW 328i/428i D660-0046-BLKDinan Free Flow Axle Back Exhaust 2012 2016 BMW 328i 428i Dinan engineers designed the BMW 328i 428i exhaust to improve exhaust flow by reducing back pressure. resulting in increased power output and a great sporty sound that is civilized when you want it to be, and pleasantly aggressive under hard acceleration. Like all Dinan exhausts our 328i 428i Free Flow Axle Back Exhaust is engineered to reduce low RPM drone so the cabin of the vehicle is still
Dinan Free Flow Axle-Back Exhaust - 2012-2016 BMW 328i/428i
Dinan engineers designed the BMW 328i/428i exhaust to improve exhaust flow by reducing back pressure. resulting in increased power output and a great sporty sound that is civilized when you want it to be, and pleasantly aggressive under hard acceleration. Like all Dinan exhausts our 328i/428i Free Flow Axle-Back Exhaust is engineered to reduce low-RPM drone so the cabin of the vehicle is still intimate and not drowned in an excessively loud tone.
Features:
- More Power: +?4 HP @ 6600 RPM, + 3 LB-FT @ 6600 RPM
- Drone abatement technologies used to reduce cabin resonance
- Enjoyably louder, sportier sound
- Twin 70mm (2.75") laser engraved, polished or ceramic black?exhaust tips
- 100% 304 stainless steel construction
- Uses the factory brackets and hangers for a factory-like fitment
Specs:
| Brand | Dinan |
|---|---|
| Dinan Point Value | 3 |
| Emission Code | 5 |
| Height | 11 |
| Labor Time (Hours) | 1.3 |
| Length | 48 |
| Max HP Gain | 4 @ 6600 RPM |
| Max Torque (lb-ft) Gain | 3 @ 6600 RPM |
| Product Type | Axle-Back Exhaust |
| Sale Category | Exhaust |
| Tip Finish | Black Ceramic Coated |
| Warning | California Proposition 65 |
| Weight | 51 |
| Width | 30 |
Application:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2012-2016 | BMW | 328i | Base |
| 2014-2016 | BMW | 428i | Base |
| 2014-2016 | BMW | 428i xDrive | Base |
| 2013-2016 | BMW | 328i xDrive | Base |
| 2014-2016 | BMW | 328i xDrive | Base |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 157 reviews
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Product Reviews
★★★★★ 5
Durable Material & Lots of Pockets
Color: Black, Size: 15.6 Inch
This backpack is perfect for going to work or going on a trip. The several compartments within each section of the backpack make it super easy to keep things organized and separated.
What I like:
* Pockets & Compartments - With 3 main compartments, each with additional pockets and zippered sections within, a front pocket, and two water bottle pockets on the sides, this backpack is definitely not lacking when it comes to organization and space. It is extremely spacious and has more pockets inside each section than I would have imagined. There's a place for everything - big and small!
* Material - The water-resistant material has a nice matte finish and resists water. It is durable and feels like it will hold up well with regular use. The zipper pulls are some of the best quality I've seen for a bag at this price point. They don't feel cheap or like they're going to come off after regular use.
* Comfort & Convenience - The shoulder straps have a decent amount of padding without being bulky, making the backpack feel more elevated than a typical school backpack. I LOVE the strap across the back of the bag. It makes traveling and moving through the airport a breeze - just slide the strap over your suitcase handle and you don't have to carry the backpack on your back.
What could use improvement:
* Interior Color - The only complaint I have about this backpack is that the listing says the interior color is tan and the color in the image is a light tan ... but the actual color is a gold color, which is not my style or taste.
Despite the discrepancy in the interior color, this backpack is a great option for a variety of uses, and the quality and durability make it a great option for everyday use as well as when you're traveling.
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Reviewed in the United States on August 30, 2025
★★★★★ 5
Stylish and Roomy Multifunctional Laptop Backpack
Color: Atrovirens, Size: 15.6 Inch
The GOLF SUPAGS Laptop Backpack is what happens when practicality finally meets clean, understated style. The “Atrovirens” shade is a deep, foresty green color that feels sophisticated and gender-neutral, making it equally perfect for men and women. This is a very good looking, on trend tonal backpack that can last you forever, long after you've graduated. It’s water-resistant (which I immediately tested during a light rain, passed beautifully) and made of a smooth, dense fabric that doesn’t wrinkle or pill. The zippers glide cleanly so no snagging or loose threads. And, most importantly, every pocket has purpose. You get multiple compartments, including a padded section that fits a 15.6” laptop snugly, a front organizer for chargers and pens and a hidden back pocket for valuables (passport, cash, etc. when you're traveling.). What surprised me most though is how comfortable it feels when loaded. The padded straps and breathable back panel distribute weight evenly, which makes long commutes or travel days much easier. It even stands upright on its own, so no more floppy bag collapse under desks. This bag is so efficiently designed to be functional in any instance.
In a world full of generic backpacks, this bag looks great and is smart, stylish and built to last. I definitely give GOLF SUPAGS five stars because this bag quietly outperforms the loud, overhyped brands.
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Reviewed in the United States on October 21, 2025
★★★★★ 5
Perfect size for laptop backpack!
Color: Champagne-upgrade, Size: 14 Inch, Color: Champagne-upgrade, Size: 14 Inch
Professional and stylish
Perfect for my 12.5” laptop! I choose the one with 14inch and is perfect size, not small not big
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Reviewed in the United States on February 7, 2026
★★★★★ 5
Professional, functional, and cute!
Color: Pinkish Grey, Size: 14-Inch
I needed a backpack that looked professional and that wasn't massive. This fits my 15 inch laptop with room to spare. The back zipper portion is padded for extra laptop protection. I was surprised by the quality. It's my go-to bag for transporting my work stuff to and from the office.
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Reviewed in the United States on June 9, 2025
★★★★★ 5
Great buy
Color: Pinkish Grey, Size: 14-Inch
Great backpack for computer. I like that I can transport my computer and other homework supplies in a small, fashionable backpack
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Reviewed in the United States on May 28, 2026
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