Amflow PL Carbon owners, check your seat tube for cracks!

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When a problem has come to a road block, instead of prolonging the grievance finding a solution is a good next step.

So, if you look at that crack near the seat post, I have some good news it is a very straightforward, reliable, and low-cost fix. Because it’s a carbon frame, there is no need to replace anything just do a localized wet layup repair.

Gently sand down the area around the crack, wrap with a few layers of new carbon fiber cloth, and bond it with a high-strength, slow-curing epoxy resin.

Once that epoxy fully cures, the repaired section will actually be structurally stronger than the original tubing.

The raw materials , just a bit of carbon cloth and resin are incredibly inexpensive, so you aren't looking at much of a cost.

It really just takes a little patience while the epoxy dries, but it’s a standard repair that will have your bike perfectly safe and back on the trails .
Whilst this is an excellent example how to repair a cracked CF frame, (as many folks are not DIYers, this is definitely NOT a newbie DIY repair), it should ultimately be up to the manufacturer to provide the repair/replacement if the frame/part falls within the warranty period & serial number, it SHOULD really be that simple. After all, this is a brand new, expensive, top end ebike. There is usually an expectation of quality when someone is paying these kinds of prices for a vehicle you pedal. If one were to purchase a new car & the unibody construction began to split after only minimal use, you would expect not only a reply from the mfg., but an apology & repair or full replacement/refund. It is THAT type of after sales service that keeps customers happy & making future purchases.
 
If I am understanding all this correctly, this affects the first gen frame?? .. and can anyone tell us if the '26's have addressed this issue?
I have an Amflow 2026 model. The first reports of the problem date back to the end of 2025 and continue with some 2026 models. The Amflow PL in size L is the most common case, but there are also confirmations for the Pro versions and the M frame size.
 
So, if you look at that crack near the seat post, I have some good news it is a very straightforward, reliable, and low-cost fix. Because it’s a carbon frame, there is no need to replace anything just do a localized wet layup repair.
That could be a solution for a bike that is 5 or more years old and has had a hard life but we are talking about this failure on new or nearly new bikes and there is no way would a DIY solution such as you propose could be acceptable and indeed might well void the warranty (for what it's worth) not to mention messing up the paintwork!
 
Whilst this is an excellent example how to repair a cracked CF frame, (as many folks are not DIYers, this is definitely NOT a newbie DIY repair), it should ultimately be up to the manufacturer to provide the repair/replacement if the frame/part falls within the warranty period & serial number, it SHOULD really be that simple. After all, this is a brand new, expensive, top end ebike. There is usually an expectation of quality when someone is paying these kinds of prices for a vehicle you pedal. If one were to purchase a new car & the unibody construction began to split after only minimal use, you would expect not only a reply from the mfg., but an apology & repair or full replacement/refund. It is THAT type of after sales service that keeps customers happy & making future purchases.
Definitely , standing behind warranty repairs is critical for a bike owner's investment . I'm under the assumption that the bike was purchased in a "Grey market " which is risky to say the least. Speaking for myself, the aggravation and lost time during the riding season in pursuit of a resolution would induce a simple hassle free approach of fixing it and getting back on terra-firma enjoying the sport.

In the future I would choose an approved dealer who has a quality approach to sales and service . So, going forward 2 approaches to repairs, 1 is uncertain and the other gets you up and running without delay during prime bike riding season
Good luck and hope you get things going soon
 
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I’m honestly shocked by this.

I also own an Amflow PL, and seeing several reports of cracks in the same seat tube area on almost new late-2025 / 2026 bikes is very worrying. This is not a minor cosmetic defect — it is a serious potential safety issue on a high-end carbon e-MTB.

What worries me even more is DJI / Amflow’s attitude. Passing the customer from global support to Chinese support, then back to a seller who does not respond, is completely unacceptable.

If these bikes were sold through an official or authorised sales channel, DJI / Amflow cannot simply wash their hands of the problem. Customers bought a DJI / Amflow product, and the company should stand behind it.

As an owner, this really damages my confidence in the brand. DJI / Amflow should investigate these frames, contact affected owners directly, and provide a proper warranty solution before this becomes an even bigger issue.
 
Definitely , standing behind warranty repairs is critical for a bike owner's investment . I'm under the assumption that the bike was purchased in a "Grey market " which is risky to say the least. Speaking for myself, the aggravation and lost time during the riding season in pursuit of a resolution would induce a simple hassle free approach of fixing it and getting back on terra-firma enjoying the sport.

In the future I would choose an approved dealer who has a quality approach to sales and service . So, going forward 2 approaches to repairs, 1 is uncertain and the other gets you up and running without delay during prime bike riding season
Good luck and hope you get things going soon
During the season, replacing a frame, even one purchased through an authorized dealer, won't be as quick as you'd like. They'll need to process your request, prepare a new front triangle, deliver it, and replace it on the bike. If you (like me) decided to protect the frame (three times "Ha!") and applied film, you'll also have to reapply the film, which isn't a simple process. Ultimately, it's difficult to complete the job within a month. Perhaps a month to resolve the issue would be excellent. I won't comment on the cost and time involved. Ultimately, it's a shame to find yourself in this situation in the middle of the season on a bike with just over 100 km on the odometer.
 
I was seriously thinking about buying an Amflow. But not now given the service and support issues. There are now many other options available not least the new Whyte bikes. I’m in the UK so buying from a UK manufacturer makes sense and Whyte have a strong reputation for quality.

Buy it direct or from a reputable shop and you'll have no issue. Buy it on Ali or via some shady grey market seller? Good luck.
 
Buy it direct or from a reputable shop and you'll have no issue. Buy it on Ali or via some shady grey market seller? Good luck.
You don't say where in the UK you are,but if you are near Guildford? pop into Ace bikes,brilliant shop, great service they also do Whyte and amflow. my Whyte has over 9000 miles on it which I keep as a spare and for when the weather really shite,my Amflow I have had since August with 3000miles on it and has bee totally reliable(no cracks,just checked)it is a size Large PL in silver
 
During the season, replacing a frame, even one purchased through an authorized dealer, won't be as quick as you'd like.

Over my riding career I have had four frames break. All were replaced under warranty. None of the replacements arrived in less than a couple months. Large company, small company, didn't matter much. The pipeline for replacement frames is different than that for new frames or whole bikes. Kinda frustrating but that's why I had backup bikes.

In case you're thinking wow, four frames, you're hard on bikes: this was over nearly 4 decades. All were road bikes. I put a lot of miles on them.
 
Over my riding career I have had four frames break. All were replaced under warranty. None of the replacements arrived in less than a couple months. Large company, small company, didn't matter much. The pipeline for replacement frames is different than that for new frames or whole bikes. Kinda frustrating but that's why I had backup bikes.

In case you're thinking wow, four frames, you're hard on bikes: this was over nearly 4 decades. All were road bikes. I put a lot of miles on them.
Not difficult to figure out why we have 4 year old alloy eMTB frames (Trek Rails) which are tough as nails and don't break, with a really good LBS which is an authorised Trek dealer.

Tricky one that ;)

Hate stuff that breaks.
 
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Whether you're a fanboy or a hater, the facts cannot be overlooked.

1. The pattern of cracked frames suggests that Amflow is deficient in either their engineering or manufacturing. Personally, I'd steer clear of their products until they've gone a year or two without a pattern of failures.

2. Failure to support their product should be a warning to all potential customers. I've always said that it's best to buy bikes that are manufactured within your region, or at least have a large corporate presence. If a company bends you over the pickle barrel, shop for pickles elsewhere.

3. This one is on the OP. What on God's Green Earth compelled him to order from China? Sure, they make some really nice things. But they also make utter garbage. They frequently engage in deceptive advertising, and customers can never know what they're really going to receive. Ordering directly from China is always a gamble. If you can't afford to lose your money, you're better off ordering locally from a reputable dealer.

🥒🛢️
 
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None of the replacements arrived in less than a couple months. Large company, small company, didn't matter much. The pipeline for replacement frames is different than that for new frames or whole bikes.

My experience has been a little different.

First was a cracked Santa Cruz swingarm. I called them up and described the problem. They were very apologetic: "Oh... yeah... sorry. We don't have any of those right now. It will be a couple weeks until we get them back from powder coating. But if you want any other color, we can ship it tomorrow." I didn't care about color, and my bike was back up and running by the end of the week.

The other was a Specialized. Again, it was a cracked swingarm. The bike was a couple years old, and it was purchased second hand. Despite the lack of official paperwork, Specialized sent out a new swingarm in a few days. As it turned out, there were two versions, and this one didn't fit the bike. Unfortunately, they didn't have any correct swingarms left. It was too old. Bummer/ But after a few days, their customer service guy went out to the warehouse and found one of their factory test bikes with the correct swingarm. They disassembled it and sent out the correct part. Even though the part wasn't new, the bike was back up and running, and it took less than two weeks.

Once again, buy only from companies that have a strong presence in your area.
 
My experience has been a little different.

First was a cracked Santa Cruz swingarm. I called them up and described the problem. They were very apologetic: "Oh... yeah... sorry. We don't have any of those right now. It will be a couple weeks until we get them back from powder coating. But if you want any other color, we can ship it tomorrow." I didn't care about color, and my bike was back up and running by the end of the week.

The other was a Specialized. Again, it was a cracked swingarm. The bike was a couple years old, and it was purchased second hand. Despite the lack of official paperwork, Specialized sent out a new swingarm in a few days. As it turned out, there were two versions, and this one didn't fit the bike. Unfortunately, they didn't have any correct swingarms left. It was too old. Bummer/ But after a few days, their customer service guy went out to the warehouse and found one of their factory test bikes with the correct swingarm. They disassembled it and sent out the correct part. Even though the part wasn't new, the bike was back up and running, and it took less than two weeks.

Once again, buy only from companies that have a strong presence in your area.
I can report a similar experience with Forbidden. I broke the axle on my V1 druid, they sent a new one no-charge, and it arrived in 3 days. I ordered several parts for a linkage service, they arrived in about 3 days too. Then I broke the rear triangle (and axle again). Took some pictures of the failure, sent an email, they told me to saw the broken part in half and prove it with a picture. Sent them the destroyed triangle images, and you guessed it; new triangle in 3 days.

I'm not dunking on their parts quality either. I'm 100kg and ride very aggressively. I am seriously considering the new MGU Druid/Dreadnought whenever that is released; service quality matters on bikes this expensive.
 
Buy it direct or from a reputable shop and you'll have no issue. Buy it on Ali or via some shady grey market seller? Good luck.
What kind of nonsense are you talking? If I buy a BMW on the used market in 2026 from the original owner—who bought it in 2024—that car doesn't stop being a BMW, and it is still covered by the manufacturer's warranty. What difference does it make how or from whom I bought the car? Isn't it standard practice to stand by the quality of a manufactured product if a factory defect arises through no fault of the owner?
Buy it direct or from a reputable shop and you'll have no issue. Buy it on Ali or via some shady grey market seller? Good luck.
What kind of nonsense are you talking? If I buy a BMW on the used market in 2026 from the original owner—who bought it in 2024—that car doesn't stop being a BMW, and it is still covered by the manufacturer's warranty. What difference does it make how or from whom I bought the car? Isn't it standard practice to stand by the quality of a manufactured product if a factory defect arises through no fault of the owner?
 
This one is on the OP. What on God's Green Earth compelled him to order from China? Sure, they make some really nice things. But they also make utter garbage. They frequently engage in deceptive advertising, and customers can never know what they're really going to receive. Ordering directly from China is always a gamble. If you can't afford to lose your money, you're better off ordering locally from a reputable dealer.
Colleague, you must understand: there is a country where there is practically no choice, which is what you described, unfortunately. I won't go into details so as not to stir up political garbage here.
Regardless of this, the case of this person is also indicative.
 
I’m honestly shocked by this.

I also own an Amflow PL, and seeing several reports of cracks in the same seat tube area on almost new late-2025 / 2026 bikes is very worrying. This is not a minor cosmetic defect — it is a serious potential safety issue on a high-end carbon e-MTB.

What worries me even more is DJI / Amflow’s attitude. Passing the customer from global support to Chinese support, then back to a seller who does not respond, is completely unacceptable.

If these bikes were sold through an official or authorised sales channel, DJI / Amflow cannot simply wash their hands of the problem. Customers bought a DJI / Amflow product, and the company should stand behind it.

As an owner, this really damages my confidence in the brand. DJI / Amflow should investigate these frames, contact affected owners directly, and provide a proper warranty solution before this becomes an even bigger issue.
All of the above hinges on the "if these bikes were sold through an official channel" part of your assertion.
What kind of nonsense are you talking? If I buy a BMW on the used market in 2026 from the original owner—who bought it in 2024—that car doesn't stop being a BMW, and it is still covered by the manufacturer's warranty. What difference does it make how or from whom I bought the car? Isn't it standard practice to stand by the quality of a manufactured product if a factory defect arises through no fault of the owner?

What kind of nonsense are you talking? If I buy a BMW on the used market in 2026 from the original owner—who bought it in 2024—that car doesn't stop being a BMW, and it is still covered by the manufacturer's warranty. What difference does it make how or from whom I bought the car? Isn't it standard practice to stand by the quality of a manufactured product if a factory defect arises through no fault of the owner?
Are you sure that the warranty would be transferred if the BMW you bought was sold in the same way as the OPs bike? I.e. not sold through an official dealer in owners home country? Otherwise you're comparing apples and oranges.
 
Buy ANY emtb off alibaba and see if the manufacturer will warranty it. I’ll bet almost 100% will say no. There’s literal 1/2 price mondrakers, Santa Cruz, etc on there. Idk how they get these bikes or what’s up with them, but I bet you zero manufacturers will cover a frame crack if you purchased from there and they do all check serial #s.

The point is very simple. In amflow warranty the first paragraph is that it must be purchased from an authorized dealer. As said by someone else on here maybe these are frames that Amflow turned down due to quality issues.

OP took a long time to admit he ordered from alibaba. He knew it was a mistake. The seller isn’t even responding to him. I do not blame amflow in the slightest for not warrantying this. I also contacted a seller back when I was buying an amflow and he was in the US but most certainly getting alibaba bikes. I questioned his warranty process and it was sketchy. A lot of people order through this guy as well and I’m glad I didn’t. His prices were very enticing.

Pretty common sense here but don’t buy from alibaba and expect warranty repairs on anything.
 
My experience has been a little different.

First was a cracked Santa Cruz swingarm. I called them up and described the problem. They were very apologetic: "Oh... yeah... sorry. We don't have any of those right now. It will be a couple weeks until we get them back from powder coating. But if you want any other color, we can ship it tomorrow." I didn't care about color, and my bike was back up and running by the end of the week.

The other was a Specialized. Again, it was a cracked swingarm. The bike was a couple years old, and it was purchased second hand. Despite the lack of official paperwork, Specialized sent out a new swingarm in a few days. As it turned out, there were two versions, and this one didn't fit the bike. Unfortunately, they didn't have any correct swingarms left. It was too old. Bummer/ But after a few days, their customer service guy went out to the warehouse and found one of their factory test bikes with the correct swingarm. They disassembled it and sent out the correct part. Even though the part wasn't new, the bike was back up and running, and it took less than two weeks.

Once again, buy only from companies that have a strong presence in your area.
This demonstrates that it is a strong and reliable brand. Even years later, they do not abandon their bicycle, as it bears their name. That is what respect for customers looks like—helping them out in a difficult situation! If Amflow wants to secure a respected position in the market, they need to look at how other manufacturers handle this. Otherwise, Amflow faces a terrible reputation.
 
IMG_4452.webp

From fb amflow groups. There’s for sure something different in the alibaba bikes. Many reports of this. Not saying all, but high majority.
 
Not difficult to figure out why we have alloy eMTB frames which are tough as nails and don't break. Tricky one that ;)

One of the frames that broke was steel, one carbon, one titanium and one aluminum. I don't think that material alone will prevent breakage.
 
I'm going to have to stand up for Amflow on this one.
Every manufacturer has had frames break, many offer incredible nearly lifetime warranty replacements.
Let's give Amflow a chance to rectify this situation on the legally sold units.
As far as Amflows bought through non-authorized channels, they specifically should NOT warranty those under any circumstances as it's the only tool they have to prevent unauthorized sales, thefts out the back & counterfeits.
The good news is that these are repairable frames, the bad news is that your bike will gain weight, not look so great, and will have greatly reduced resale value. Which is acceptable because you saved maybe thousands on the purchase price.
GL
 
All of the above hinges on the "if these bikes were sold through an official channel" part of your assertion.

Are you sure that the warranty would be transferred if the BMW you bought was sold in the same way as the OPs bike? I.e. not sold through an official dealer in owners home country? Otherwise you're comparing apples and oranges.
Does it really matter where or how the bike was sold? Based on the serial number, the frame number, and the activation date, the bike is still under warranty. It turns out Amflow is simply washing its hands of its own product—basically saying, "Do whatever you want; it’s not our problem..." Is this the approach they’re taking to achieve market success? They might see some success in the short term, perhaps. But what about the long term?
 
I'm going to have to stand up for Amflow on this one.
Every manufacturer has had frames break, many offer incredible nearly lifetime warranty replacements.
Let's give Amflow a chance to rectify this situation on the legally sold units.
As far as Amflows bought through non-authorized channels, they specifically should NOT warranty those under any circumstances as it's the only tool they have to prevent unauthorized sales, thefts out the back & counterfeits.
The good news is that these are repairable frames, the bad news is that your bike will gain weight, not look so great, and will have greatly reduced resale value. Which is acceptable because you saved maybe thousands on the purchase price.
GL
Have you considered that there are countries where Amflow has no official representation? Does that mean you shouldn't buy the product? Even if the rider saved some money on the purchase, Amflow didn't give that bike away for free to the seller he bought it from. There is a product, and there is a widespread failure. They ought to acknowledge this systemic defect without asking unnecessary questions. The bike is still under warranty? Fine, we’ll replace it—no problem... Amflow’s policy here is completely wrong!
This bike was purchased in Hong Kong. Amflow has records of when and to whom a bike with this serial number was sold. If it was sold legally, what is the problem?
 
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Have you considered that there are countries where Amflow has no official representation? Does that mean you shouldn't buy the product? Even if the rider saved some money on the purchase, Amflow didn't give that bike away for free to the seller he bought it from. There is a product, and there is a widespread failure. They ought to acknowledge this systemic defect without asking unnecessary questions. The bike is still under warranty? Fine, we’ll replace it—no problem... Amflow’s policy here is completely wrong!
so is alibaba your new local dealer then? lol. Bro you call authorized dealers and have them ship a bike just like alibaba would do.

I don’t have a local dealer where I live and I had to pay a premium to have mine shipped here from an authorized dealer. Actually was calculated as international shipment.
 
I can buy a smartphone anywhere and take it to any service center in the region it was intended for. Even if there are no proof of purchase, the warranty is valid from the date of manufacture. Many smartphones, including Apple ones, have an international warranty.

I also haven't seen a single manufacturer selling defective bicycles. People who bought bikes through authorized dealers have also suffered. They've already received replacements, so it's worth acknowledging facts:

1. The warranty situation isn't all bad, but it's not perfect either. There are no authorized service centers, and if the authorized dealer goes bankrupt (which is also normal), the defective product will be left without a warranty.

2. Since people receive a replacement and there is evidence of a defect when purchasing through an official dealer, the problem is not related to the place of sale.

3. The problem is limited in scope. It appears to be related to a specific batch of frames. It's possible this is a manufacturing process issue on one of the production lines.
 
Does it really matter where or how the bike was sold? Based on the serial number, the frame number, and the activation date, the bike is still under warranty. It turns out Amflow is simply washing its hands of its own product—basically saying, "Do whatever you want; it’s not our problem..." Is this the approach they’re taking to achieve market success? They might see some success in the short term, perhaps. But what about the long term?
Of course it matters. Not least because the very first sentence in the Amflow warranty says:

"These After-Sales Policies (these “Policies”) only apply to the products you purchased for personal use from Amflow and its authorized retailers, and are not intended for resale purposes."

Specialized say the same:
"As explained in more detail below, Specialized warrants the Products for a limited time from the date of original retail purchase against defects in materials and workmanship when used normally in accordance with Specialized’s published guidelines. The
guidelines include, but are not limited to, information contained in technical specifications, user manuals and service communications. “Original retail purchase” means the Product was purchased new for the first time from an Authorized Specialized Retailer"
 
I believe there are two issues confounding this discussion:

1. Mass defects in the seat tube area of frames (when more than 10 people have the same problem, it's already a mass incident)

2. Refusal of warranty service in the absence of official dealer contacts (though Amflow has such a contact, since they know the serial numbers)
 
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