Varstrom（varstrom.com）在 OK.one 的综合评分为 3.4 分（满分 5 分），基于本站收录的 59 条用户评价，属于运动的分类，口碑一般。评价两极分化：57% 给出 4 星及以上，同时 27% 打了 1 星；商家回复了 57% 的差评；评价主要围绕产品、质量、客户服务。数据最后更新于 2026-10-24。
Most reviewers were somewhat happy with their experience overall. Consumers often find the conversion kits straightforward to install on their bicycles and genuinely appreciate the helpful customer support team whenever minor technical issues occur. Many people note that the motors perform exceptionally well, delivering a smooth, powerful, and remarkably quiet ride during their daily use. However, some customers also noted significant communication delays and ongoing difficulties when trying to reach support teams for assistance with their orders. A few people additionally experienced frustrating problems with faulty electrical components, broken wires, or missing parts upon initial delivery of their packages.
本段由 AI 基于该企业的全部评价自动归纳，仅供参考，不代表平台立场。I do not recommend this company, I complained about the left handle when ordering VS5483, unfortunately no one communicates with me. Another order VS5696 arrived with a long delay of about 14 days.Another order VS5804 created on 6.4. arrived only battery without motor is 18.4. 27.4.2026 I'm changing the rating to four stars, the company sent me spare parts.
In January 2026, I purchased three separate Varstrom kits: a 250W, a 500W and a 750W. What should have been a straightforward purchase has turned into repeated faults, repeated delays and repeated disappointment. The problems have not been limited to one item. We have had: 1. a battery fault where the switch did not properly isolate power, 2. a throttle fault that stuck ON and later failed with Error 4, 3. long delays and a lot of chasing to get replacement parts sent out. Now the latest issue concerns the 750W TSDZ8 kit. On the first outing since the throttle replacement, the motor made a loud creaking noise while pedalling and then started slipping under load when climbing, even in a low gear. It sounded like the gears/cogs were grinding. That is plainly not normal behaviour for a new or replacement motor. This latest 750W motor fault has been reported, and so far it has simply been ignored. At this point, this no longer looks like bad luck or a one-off issue. It looks like a pattern: faulty products, poor reliability, and after-sales support that is slow, reactive and ultimately ineffective. We bought three kits in good faith and have spent far too much time dealing with faults instead of actually using the bikes. I will update this review if Varstrom finally deal with the 750W motor issue properly. As things stand, based on my experience across all three kits, I would strongly advise others to think very carefully before buying.
The battery was delayed in shipping out. Also, the shipper sent bulk email breakinng GDPR rules. There was no installation manual, so goodluck with building it. I will not recommend for anyone
No answers to my emails after 3 reminders and 10 days passed, after WhatsApp messages, web chats.... On Mon, Apr 6, 2026, 5:58 PM Razvan Berceanu razvan.berceanu @ gmail.com wrote: I am interested in the purchase of two TSDZ16 Mid Drive Motor Conversion Kits, consisting of two: 2 X TSDZ16 Mid Drive Motor 2 X 52V 20 Ah Battery 2 X Display EKD01 2 X eBrake sensor 2 X Speed sensor 2 X Shift Sensor (Gear) ,for mixed use (off-road + sustained climbs). The bicycles I intend to convert are: Corratec Super Bow Fun 29 (2015) 29” aluminum frame, standard BSA bottom bracket ~68 mm, classic MTB setup Corratec X-Vert Miss C Black/Pink – aluminum hardtail, XC geometry, ~100 mm suspension (RST), entry-level MTB configuration From a technical standpoint, I would like to clarify the following: 1. Mechanical compatibility: confirmation of TSDZ16 compatibility with the existing bottom brackets (BSA 68–73 mm); potential chainstay interference (especially on the Super Bow – “bow frame” design); solutions for chain alignment (chainline optimization for a 1x setup). 2. Electrical integration: recommended battery type (cell type, BMS, max continuous current – considering the TSDZ16 controller ~30A); Considering the technical specifications and geometry of the bicycles, are 52V 20 Ah batteries suitable? ; connector / wiring compatibility / waterproofing considerations. 3. Performance & usage: load behavior for a ~100 kg rider + long climbs; recommendations for current limiting (e.g. 25A vs 30A vs 35A) for reliability; drivetrain recommendations (chainring, cassette, chain wear). There are different Chain Wheel sizes to purchase compatible with tsdz16? what would these be ? Kind regards, Razvan +40765666676
I’m extremely disappointed with this company’s handling of personal data and their complete lack of response. On April 10th, 2026, I received an email from them where my personal email address — along with several other customers’ addresses — was visible in the “To” field instead of being properly hidden using Bcc. This is a clear breach of GDPR and a serious failure to protect customer information. What’s even more concerning is that I have sent multiple emails to raise this issue and have received no response whatsoever. No acknowledgement, no explanation, and no attempt to resolve the situation. This level of negligence regarding data protection, combined with poor customer service, is disappointing. I would strongly advise others to be cautious when dealing with this company.
Very good experience: I ordered the wrong thing (my fault), and they arranged the return without issue, they even covered the shipping fee and refunded me as soon as I had posted the package. Highly recommended.
Made an order for a bafang er bike conversion kit for my bella bike, they shipped the battery from France and i got i fairly quick but when i only received a Battery i though it was a scam, i contacted bafang and they shipped the rest of the ebike kitt from China. In under 2 weeks i got everything and for about 40% of the Danish prices. I would gladly recommend. If you are buying to a 3 wheeler, get an extension cable for the speed sensor.
Fast shipping times and great shipping companies are used. I ordered 2 motors one had a squished battery cable. I contacted Varstrom via Whatsapp and got a replacement after just a few days. Sadly the new controller came without a new gasket which broke during disassembly. Contacted them about this via Whatsapp again and it was taken care of. Both motors are running. Sometimes there is a bit of delay but just message them again and there will be someone to help you.
My ebike conversion kit arrive quite promptly and communication was great up until I received my kit. From then on there was no communication. Even though the emails I received stated that customer support was available and they would be on hand to assist with any problems I found that they did not respond at all. WhatsApp messages and email got no response, not even an automated bot reply. The Web chat is a simple bot chat with the usual stock answers and is no help at all. I plan to do another ebike conversion but I will definitely avoid Varstrom for buying the kit. The reply here offering help is welcome but Varstrom already has my order number and support request as I sent an email to the contact email listed on their website. Order number #VS5544
Please offer your order number and we will help you solve the problem
I ordered a hub motor kit and after a couple of days they emailed me saying that the motor is out of stock and wondered if i wanted to wait. I told them no and to cancel my order. Got a confirmation that they would. I waited 2 weeks without anything happening. Emailed them and asked them again to cancel, no reply. Contacted them on their site, no reply. Another 2 weeks later i got a mail that they had sent me the motor. Mailed them back saying that i don't want it anymore since i had already bought another one, no reply. Don't buy anything from them.
Good day customer, Sorry for the mistake, we have contact you on email and whatsapp to help you return the package and get refund.
Revision of original comments below: Varstrom contacted me via WhatsApp in response to the original post below and apologized for the slow reply. They identified the problem and shipped a set of spacers at no charge. Original: After purchasing a Bafang conversion kit from Varstrom and had a question. I tried every contact method available: chat on their website, WhatsApp, Facebook and the email address listed on their website (it bounced). Zero response after several days.
Experience was great, delivery was swift and effective, everything was packaged as expected with both cardboard and polystyrene blocks, neatly done. Customer service was also outstanding, offering free of charge an accessory (gear sensor) I unfortunately forgot when I ordered. The product itself (Tongsheng TSDZ16) is wonderful and works as expected. All in all would recommend!
Good customer service. Highly recommend.
Very good customer service, I had a problem with the instalation of the e-bike kit, and they answered very quickly, found out there was a mistake on my part I ordered the wrong part. Simon was kind enough to send me the correct part free of charge!
The product (TSD 500w) is as expected, easy to mount and smoothly riding with the torque capter . The delivery was longer than indicated in the Varstrom site. Almost perferct. (laughing). Gilles. From Vendée France .
I bought Varstrom rear motor wheel and a battery for the rack to use it for delivering food and I have it for few months already and I think now I can give my honest opinion about it. Overall the product is good, but the quality - not so much. In the beginning, when I received the product, the wheel was with loose spokes, so I had to tight them myself. The spokes were terrible - they were breaking very easily. On all my bikes I've never broken a spoke before, and with this wheel I broke 6 for the first month. I had to order separately from different company thicker and more durable spokes, so they can last longer. I presume that in the near future I'm gonna have to change the rim too, because it seems that it's bending very easily and I'm not even riding the bike in the mountain. The battery doesn't last much if you want to go full speed all the time, but if you ride at 30-33 km/h, you can manage to ride 5-6 hours, also depending on the weather. Few weeks ago the wheel stopped working. After describing what the issue was, the guys from Varstrom were so kind to send me new controller and the problem was solved, so kudos for that. Although when I was breaking the spokes, they didn't answer my message. Maybe the warranty doesn't cover that, I don't know. Anyway the quality of their spokes is s**t, so they wouldn't help me much, but they could've still answered. It would've been nice thing to do. So generally the quality of the wheel is awful, not to mention that I had issues fitting the wheel to my very standard Specialized frame. My advise for them would be to put thicker spokes and to make more durable rim, because the wheel is heavy and in my case the battery for the rack adds extra weight for the rear wheel. The battery and the rest of the accessories are okay. The issue with the controller I believe was that some moisture got inside and maybe to some degree was my fault too. There is room for improvement here too - maybe to make different design and to be more water resistant. To summarize, I could've got better value for the money I've paid. I see Bafang (also sold from Varstrom) are little more expensive and I wonder if the quality of their products is better. I'm still using the wheel though and it does the job, although I have issues from time to time.
Good day customer, Sorry for the delay, we have sent you an email to follow your case again. We change the email server and the new server is still testing, if you can not sent us email or you can not get our email, you can also contact the whatsapp (+86 15989932938) for support.
The product is as expected. But there is a problem with customer service (as some other people have noted). Having said this, I do not mean that the customer service is "bad". More likely, this guy is overwhelmed by a lot of people like myself who must go to him instead of looking at a *detailed* user manual, which is nowhere to be found. I took to Chat GPT. Sometimes helps but sometimes not.
My display was giving 100% battery, even when it was almost empty. I contacted them and within 24 hours I had a reaction. They looked with me what they problem could be and have send me a more expensive display without any extra costs. Great service and very friendly.
Don't understand the good reviews. Broke after only one year. Now I think they sell fake stuff. Company actually gives very bad service. Bought two bike engines. One broke after only one year so started an issue. Had to do everything they asked to check for the problem. Video's, foto's etc. When nothing worked and proved the engine was broken, they did not respond anymore leaving me with shit. Ali Express Order is 3024005275267238 Well, Varstrom told me to contact me, but they never did. Just a reply as if they are customer friendly, but they don't act as expected. I did share my email to you before, but I don`t hear from you. The seller (you) does not give any reaction. I sent you this mail on 8 sept, 08:53 As expected still no reaction of Varstrom. Don't expect service when you buy here
Good day customer, May I know where do you buy the kits from Amazon or Aliexpress? 9/8: The seller will try to contact you for further help. Also how can we contact you, can you offer an e-mail or contact [email protected] 9/12: This is the support for the orders from https://varstrom.com. Not the order from the platform. We find out the order number is from the platform and then we call the seller to contact you for support. Would you mind sharing us your email to [email protected] and we can contact you?
I ordered a Bafang BBS01 kit from Varstrom, which arrived timely and was offered at a great price. The product works just as intended and when I needed help with setting up the display, Varstrom support replied with a solution within one business day. Great experience, would buy again!
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Onis London共 59 条符合条件的评价
