UPANBIKE Bike Seat Post Aluminum Alloy Extra Long 17.7inch(450mm) Replacement Bicycle Seatpost φ 25.4 27.2 28.6 30.4 30.9 31.6mm

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.

perfect seat post replacement, I needed something a little longer, and It looked like it was made by the exact same manufacture that came with my Ebike, it just has a different name on it.

At 6'6" my son is what I would call a Tall Lad(tm). The seat post on his Rad Power Bikes Rad City 5 + came as 27.2 by 400mm, which at full extension was just barely enough. With this post being 50mm longer, it puts more post in the downtube, reducing the chances of him breaking it. as an added bonus, there are numbered lines on this one so it's easy for him to return it to an exact setting. Solid, easy to install, five stars.

This product allowed me to elevate the bicycle seat to a usable height. With the original seatpost, the bicycle had been very uncomfortable. There is plenty of post left in the socket to ensure strength and integrity.

I was happy to find a very long seat post of the diameter I needed to get my seat up to the needed height. The post is well-made, is durable and looks good. I would have given it five stars, but the tilt range wasn't sufficient for my bike. I had to do quite a bit of filing of the tilt mechanism slots to get the seat to be level (rather than having the front of the seat tilted up). I don't know whether to blame this more on the bike (tube angle) or on the seat post, but having a larger range of adjustment would have been convenient. I also found that it is necessary to really torque down the tilt clamping screw with a long 6 mm hex key to ensure it doesn't loosen up.

I needed more height to my seat. I’m 6’4” this works great

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

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 !!!

The seat post is long 450mm 30.9 diameter and light. The matte finish grips into the seat tube perfectly so no slip.. There’s a graduation on the back so it’s easy to set back to your favourite height. I have mine set at 5 for street and 2 for off road. The seat clamp was easy to set and only one bolt. Only drawback is the prominent logo “upanbike”. Nothing screams “performance” quite like upanbike. All in all it’s good value. Im 6-4 with about a 40” pedal reach.

Does what it supposed to do

Es difícil de encontrar la medida que adquirí y cumplió con las expectativas

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

Medida correcta las bicicletas marca Zigna o similar con tubo de 30.4mm