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- USA
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Ships within 48 hours · Estimated delivery Jul 12 - Jul 17
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Description
Dinan Free Flow Axle-Back Exhaust for 2020-2025 BMW X3M/X4M D660-0086-BLKDinan Free Flow Axle Back Exhaust 2020 2025 BMW X3M X4M 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
Dinan Free Flow Axle-Back Exhaust - 2020-2025 BMW X3M/X4M
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.
Features:
- More Power: +8 HP @ 6600 RPM, +6 FT-LB @ 6600 RPM.
- Enjoyably louder, sportier sound
- Quad 4.5" (114mm) diameter clamp-on, double-walled, black ceramic coated 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.
Specs:
| Brand | Dinan |
|---|---|
| Dinan Point Value | 3 |
| Emission Code | 5 |
| Height | 10 |
| Labor Time (Hours) | 2.5 |
| Length | 54 |
| Max HP Gain | 8 @ 6600 RPM |
| Max Torque (lb-ft) Gain | 6 @ 6600 RPM |
| Product Type | Axle-Back Exhaust |
| Sale Category | Exhaust |
| Tip Finish | Black Ceramic Coated |
| Warning | California Proposition 65 |
| Weight | 72 |
| Width | 29 |
Application:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2020-2025 | BMW | X4 | M |
| 2020-2025 | BMW | X4 | M Competition |
| 2020-2024 | BMW | X3 | M |
| 2020-2024 | BMW | X3 | M Competition |
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
4.2 ★★★★★
Based on 2173 reviews
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Product Reviews
★★★★★ 5
a perfect manual toothbrush
Color: Mint
this is definitely my favorite toothbrush i've ever used. even though it's just a manual one, it's still my favorite. it's aesthetically pleasing and the bristles are perfectly soft so it doesn't hurt my gums (i naturally have sensitive and fragile gums). i love caps that covers bristles; it's a must if you keep your toothbrush in the bathroom and this toothbrush comes with a cap that clicks open instead of one that slides on and off, pretty unique and much more hygienic as it keeps the germs out much better.
i can't comment on the capabilities of the charcoal since i just received this but i can say that when i used it, i didn't feel any grit at all, so i believe boka's claim that the charcoal is soft enough to be safe for teeth (most of the time, charcoal is too gritty for teeth and ruins the enamel) the toothbrush is also pretty hefty so it's not cheap! paired with the boka toothpaste, my teeth feel so clean. now off to buy the whitening strips, floss, and mouthwash tablets from my new favorite brand!
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Reviewed in the United States on May 28, 2024
★★★★★ 5
Excellent
Color: Multi Color
I really like this product , it is plush means more fibers , it is not harsh plastic to blister your gums , for what it is very good price and quality.
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Reviewed in the United States on April 3, 2026
★★★★★ 5
Excellent toothbrushes!
Color: Mint
I absolutely love these toothbrushes. They clean so well and there is just this perfect bristle hardness to it so that my teeth and gums feel like they’ve gone to the spa.
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Reviewed in the United States on January 25, 2026
★★★★★ 4
Super Soft & High Quality – Great Toothbrushes!
Color: Multi Color
Love these toothbrushes! The bristles are extra soft and comfortable, making them gentle on gums but still effective for cleaning. The overall quality is excellent, and they’re a solid pick for both adults and kids. Highly recommend for everyday brushing!
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Reviewed in the United States on September 22, 2025
★★★★★ 5
Lovely dense and soft.
Color: Multi Color
Perfect toothbrush.
I’ve always loved a super stiff toothbrush, it just felt right, like scrubbing the grime off. BUT, I ended up scrubbing my gums into recession. So I’ve had to buy soft toothbrushes.
For years I’ve hated them. Waterpik, floss then brush and the brushing felt always felt like I wasn’t doing anything. I disliked everything about the bristles.
These were bought on a whim, they’re pretty and have four which is how many I needed to replace everyone’s toothbrushes.
I LOVE these. They’re definitely soft, in a way I haven’t felt before and can’t really articulate, but they’re also dense. There are a lot of bristles. The bristles feel like I’m getting my teeth very clean, like they’re getting into all the little areas they need to.
The only issue I have is they squeak a little and that can be annoying.
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Reviewed in the United States on October 12, 2025