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Size
Note:The diameter number is for frame seatpost hole,the seatpost measures a little smaller than the diameter number marked on the seatpost.e.g: a 25.4mm seatpost measures about 25.0mm~25.2mm only,not exactly 25.4mm.
Features:
- Length:450mm
- Tube thickness:2.5mm,high strength
- There is a safe insertion line
- (Please install to the safe line at least)
- Replacement Seatpost,extended extra long length
Micro-adjust
- Micro adjustable clamp:you can adjust the tilt angle of the saddle via the clamp to make the saddle horizontal.
- Normally it's not supposed to put over 220 lbs(100kg) on this seatpost.
How to measure and confirm the diameter that you need
Please do measure and confirm the exact post diameter that you need for your bike. Otherwise you may find it too small or too large for your bike frame seat post hole, then you'll have to spend more time to return it. Thank you for your support.
There are two ways to confirm the diameter that you exactly need.
1. Check the diameter mark on your old seat post, normally there's a size mark on your old seat post. For example, if there's a mark " Φ25.4"on your old seat post, then you can buy a new 25.4mm seat post.
2. If you have a vernier caliper, measure your old seatpost diameter, or measure the inner diameter of the seatpost hole, then buy a similar size new seat post. For example, if the measurement is about 27.1mm, then select a 27.2mm seat post will do.
3. If you don't have a vernier caliper, use a small stick to measure the inner diameter of the seat post hole (see the picture showing)
JuniperTrekker
Reviewed in the United States on January 17, 2025
I wanted to ride my short spouse’s E- bike and this did the trick. Note: Most posts have 2 bolts to attach the seat…but this has only one. I was a bit leery, but this lightweight post seams fine with the one bolt. I also was able to adjust the seat angle to my liking. YMMV & I’ll update this post if I find a problem
Anna Monomus
Reviewed in the United States on July 10, 2024
This is an ok quality seat post, at this price it’s what you expect on mid range bike. If you are buying this for your Rad EBike then read on. The seat tube angle on my Rad is less vertical then my other bikes. If you like to ride with seat angle horizontal or nose down this seat post may not be for you. I was barely able to get my seat horizontal. Other wise it’s affordable long seat post.
G. Carlson
Reviewed in the United States on May 1, 2024
The bike I bought only comes in a sightly smaller frame than I really need, but this seat post saved the day. The stock post was about 2" too short for my legs when properly fitting the bike, but this replacement post has length to spare. Well made and decently thick, so I expect no strength issues.
Ned J Hardman
Reviewed in the United States on December 27, 2024
I am 6’6” and purchased rad rover 6+. This worked to give me the needed height. Very happy with this product.
Spikey
Reviewed in the United States on November 22, 2024
Works as expected...
rg
Reviewed in the United States on July 19, 2023
I had been using a seat post that was raised too high and therefore quite dangerous since I didn't have enough length in the bike frame. With this longer and well marked seat post, I'm able to pedal with proper leg extension. It's like having a bigger bike. Easy to install , sturdy, and well marked.
Cliente
Reviewed in Spain on February 11, 2023
Fácil de obtener gracias a AMAZON. Necesitaba uno más largo y este modelo así lo es.
Russel
Reviewed in the United Arab Emirates on November 23, 2023
You get what you paid for. Looks cheap but it gets the job done. Ive been using this for 2 years. No problem or whatsoever. Its good seatpost
Ana Cecilia Francisco García
Reviewed in Mexico on July 17, 2022
Es difícil de encontrar la medida que adquirí y cumplió con las expectativas
Hector GOMA
Reviewed in Mexico on January 22, 2022
Medida correcta las bicicletas marca Zigna o similar con tubo de 30.4mm
Stephane Carrier
Reviewed in Australia on January 14, 2021
Does what it supposed to do
jayr
Reviewed in the United States on September 1, 2020
I extensively looked for a Replacement Extra Long Seatpost Seat Post. And deceided on the UPANBIKE Bike Bicycle MTB Replacement Extra Long Seatpost Seat Post 17.7inch The 25.4 I ordered was an absolutely perfect fit and at 17.7 inches long, it gave an inch or two more than any others I reviewed. I didn't go wrong.Actually, the UPANBIKE is a much better post than than the one my bike's manufacturer was selling on Amazon. In addition, you can adjust the seat sitting position a few angle.The photos on Amazon show how easy it is to install. No issues whatsoever. Very satisfied with this purchase and a black post goes with any color bike.I am very satisfied for the quality, length, and price value.
Miles-Kevin Baron
Reviewed in the United States on June 27, 2020
I'm giving a positive review of this company and this product. Even though there was an issue with my seat post, it was because I'm 6'4" and fully dressed, I'm pushing 300 lbs. But I can't knock this product. It's well made and even little things like the insert markings are quality. The adjustment range is great, and there is some meat to the teeth where the seat level adjusts. Not just slight bumps like others I have seen that can jump under pressure. Once you cinch this one down, your seat stays put. Also, even though it was outside the 30 warranty before I had issues, they responded immediately and issued a refund so I could order a more robust model. So if you're looking for a great pillar for a good price, and you're not over 290 lbs, I say this is a great choice !!!
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