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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

4.6 4.6 out of 5 stars 796 ratings
$25.99
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Black 450*25.4mm
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Purchase options and add-ons

Color Black 450*25.4mm
Material Aluminum
Brand UPANBIKE
Bike Type Mountain Bike
Product Dimensions 1"W x 17.72"H

About this item

  • To fit frame seatpost hole: 25.4mm
  • Important note: real measure of the seatpost diameter is a little smaller than the number marks on it. e.g.:25.4mm one may measures about 25.0~25.2mm only
  • Extra long: 17.7" (45cm); Help to raise height of saddle, so that tall rider don't have to bent much forward
  • Replacement seatpost for most bike, mountain bike, road bike, universal bikes
  • Clamp is adjustable for the saddle tilt angle

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Product Description

Installation Tips:

If you find it hard to turn the fixing bolt at first time, please insert the post into bike frame hole and lock the

seatpost clamp, then you can turn the bolt easily with a hexagon screwdriver. After the bolt is moved at first time, it

can be moved easily afterwards.

Specifications

Material:6061 T6 Aluminum alloy

Color:black

Weight:about 380g

Length:450mm

Tube thickness:2.5mm,high strength.

Tube Outter diameter:

25.4mm,27.2mm,28.6mm,

30.4mm,30.9mm,31.6mm.

Extra Length:

Help to raise height of saddle,

so that tall rider do not have to bent much forward.

Features:

Clamp is adjustable for the saddle tilt angle

Package includes:

1 X Bike Seatpost

Pay attention:

normally it's not supposed to put over 220 lbs(100kg) on this seatpost.

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.

SEATPOST

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.

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)

SEATPOST

Product information

Technical Details

Additional Information

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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

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

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Customer reviews

4.6 out of 5 stars
4.6 out of 5
796 global ratings

Customers say

Customers like the quality, fit, performance, value, and height of the bicycle seatpost. For example, they mention it's a solid product, works great, and is good value for money. Some are also satisfied with ease of installation, and weight. That said, opinions are mixed on appearance.

AI-generated from the text of customer reviews

65 customers mention51 positive14 negative

Customers like the quality of the bicycle seatpost. They say it's a solid product, holds up fine, and has a strong clamp. Some mention that it'll be a perfect upgrade.

"...Well made and decently thick, so I expect no strength issues." Read more

"Really well-built and great for the price." Read more

"...It's like having a bigger bike. Easy to install , sturdy, and well marked." Read more

"...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...." Read more

39 customers mention30 positive9 negative

Customers like the fit of the bicycle seatpost. They mention that it fits perfectly, provides the added length needed, and is super long. Some say that it's strong.

"...for my legs when properly fitting the bike, but this replacement post has length to spare...." Read more

"...It did fit perfectly in the post...." Read more

"...removed , ( I tried but it can't be removed ) , I like the fact it's super long , and would have rated it 5 stars , if it weren't for the issue of..." Read more

"...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..." Read more

20 customers mention20 positive0 negative

Customers are satisfied with the performance of the bicycle seatpost. For example, they mention it works great, has zero problems, and is good for the goal they're trying to accomplish. Some say the longer post works perfectly and is an OEM replacement. That said, some feel it'll eventually fail.

"Product is very good for the goal you're trying to accomplish. It is pretty strong and lightweight...." Read more

"...So far it works great and added the additional leg extension I needed." Read more

"...This longer post worked perfectly. I’m about 160 pounds, not a real radical rider, and the post seems very sturdy, once installed worked perfectly...." Read more

"...He says everything works great, easy to install, zero problems, and now he can sit upright and rest comfortably for longer rides." Read more

17 customers mention17 positive0 negative

Customers appreciate the value of the bicycle seatpost. They say it's a great buy, does the job, and is excellent value for money.

"Really well-built and great for the price." Read more

"Very, very nice seatpost for the price. For most cyclists this certainly good enough." Read more

"...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 !!!" Read more

"...I am very satisfied for the quality, length, and price value." Read more

11 customers mention11 positive0 negative

Customers are satisfied with the height of the bicycle seatpost. They mention that it is longer, lighter, and adds more height to allow taller riders to ride comfortably. Some say that the seatpost is better for tall people, and provides additional adjustments if needed.

"...17 inches tall prefect for me anyone else who want to ride. Variable height adjustments." Read more

"...This seat post is longer, lighter, and looks better than the more expensive one it replaces...." Read more

"...And, gave me the height with additional adjustments if needed. Very happy I got it." Read more

"...Feels solid and slides easily. This adds more height to allow taller riders to ride comfortably. A good find!" Read more

10 customers mention10 positive0 negative

Customers find the installation process of the bicycle seatpost to be easy and simple. They mention that it's well-made and easy to attach a railed seat to the post.

"...It's like having a bigger bike. Easy to install , sturdy, and well marked." Read more

"...The photos on Amazon show how easy it is to install. No issues whatsoever...." Read more

"...He says everything works great, easy to install, zero problems, and now he can sit upright and rest comfortably for longer rides." Read more

"It was easy to install, my Bicyle old seat fit without any modifications and the price was the lowest for anything close...." Read more

8 customers mention8 positive0 negative

Customers are satisfied with the weight of the bicycle seatpost. They mention that it is lightweight, has secure attachments, and is worth the price.

"...It is pretty strong and lightweight. If you're around 6'0-6'3 this should work well for you...." Read more

"...This light weight post had high ratings. I ran it by a professional cyclist pal, and he said it looks to be a great option!..." Read more

"...This seat post is longer, lighter, and looks better than the more expensive one it replaces...." Read more

"...This UPANBIKE post is lightweight, seems pretty strong, gives me a LOT of extra room to adjust the seat height, and allows for good front-rear..." Read more

8 customers mention5 positive3 negative

Customers are mixed about the appearance of the bicycle seatpost. Some mention that it looks good, while others say that it eventually fails or is the result of bad design.

"...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...." Read more

"Bought a BMX bike (Mongoose L60), and the seat&post it came with is complete crap. It’s a seat for the height of like a 2 year old...." Read more

"...It also looks good with my blue bike as an added bonus!..." Read more

"...This seat post is longer, lighter, and looks better than the more expensive one it replaces...." Read more

Good but not great - adjustable seat angle doesn’t really work well
4 Stars
Good but not great - adjustable seat angle doesn’t really work well
Ok, this is a quality, solid product. It is not fair to the product that I am 6’2” 230 pounds. It did fit perfectly in the post. Unfortunately I adjusted (micro adjustable as it is advertised) the seat so that the front is not sticking up but each time I rode, it clicked back - and I tightened those screws to the point that an impact wrench couldn’t budge it. Bottom line, great product if you’re normal sized, but it really is not made to adjust its angle. Had to replace.
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Top reviews from the United States

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G. Carlson
5.0 out of 5 stars Great seat post for my new E-Bike!
Reviewed in the United States on May 1, 2024
Color: Black 450*30.4mmVerified Purchase
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.
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BIGROB415
5.0 out of 5 stars Love it
Reviewed in the United States on May 8, 2024
Color: Black 450*30.4mmVerified Purchase
Really well-built and great for the price.
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Amazon Customer
5.0 out of 5 stars Very tall post
Reviewed in the United States on February 12, 2024
Color: Black 450*25.4mmVerified Purchase
If looking for a taller post this it. 17 inches tall prefect for me anyone else who want to ride. Variable height adjustments.
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OSCAR CASALLAS
4.0 out of 5 stars Fácil de instalar mecanismo de apriete seguro y confiable, algo flexible
Reviewed in the United States on April 4, 2024
Color: Black 450*27.2mmVerified Purchase
Me gusta su acabado y la facilidad de instalación, por su longitud flexa un poco, tal vez si fuera un poco más larga podría insertarse más y proteger la pieza y el marco
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86sev6
5.0 out of 5 stars The extra length I needed.
Reviewed in the United States on November 7, 2023
Color: Black 450*30.4mmVerified Purchase
I'm a bit too tall for my ebike, this seat post makes up for the lack of extension I got with the original seat post. Now my legs aren't bent as much.
One person found this helpful
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rg
5.0 out of 5 stars Just right for raising the seat
Reviewed in the United States on July 19, 2023
Color: Black 450*25.4mmVerified Purchase
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.
5 people found this helpful
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Rags
5.0 out of 5 stars Great buy
Reviewed in the United States on March 17, 2023
Color: Black 450*27.2mmVerified Purchase
It’s a really long seat post- so much so that I had to hack saw a portion off. Got it for my gravel bike because the stock one was too short. Though the minimum insertion part is no longer on it from having cut it off, it’s so long that I have most of it in the bike frame- so nothing to worry about. It’s great to see there are other diameters available- I may get another one for my single speed bike.
One person found this helpful
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Charles Walters
5.0 out of 5 stars Great
Reviewed in the United States on September 29, 2023
Color: Black 450*30.9mmVerified Purchase
Very, very nice seatpost for the price. For most cyclists this certainly good enough.
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Top reviews from other countries

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Ana Cecilia Francisco García
5.0 out of 5 stars Es difícil de encontrar la medida que adquirí y cumplió con las expectativas
Reviewed in Mexico on July 17, 2022
Color: Black 450*30.4mmVerified Purchase
Es difícil de encontrar la medida que adquirí y cumplió con las expectativas
One person found this helpful
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Stephane Carrier
4.0 out of 5 stars Good price
Reviewed in Australia on January 14, 2021
Verified Purchase
Does what it supposed to do
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Guy Smiley
5.0 out of 5 stars It’s good. Worth it.
Reviewed in Canada on May 28, 2023
Color: Black 450*30.9mmVerified Purchase
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.
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Hector GOMA
5.0 out of 5 stars Cumple con la descripción, la medida es correcta, se ve de buena calidad el diseño es bueno!
Reviewed in Mexico on January 22, 2022
Color: Black 450*30.4mmVerified Purchase
Medida correcta las bicicletas marca Zigna o similar con tubo de 30.4mm
One person found this helpful
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Cliente Amazon
5.0 out of 5 stars Lo que necesitaba..
Reviewed in Spain on February 11, 2023
Color: Black 450*27.2mmVerified Purchase
Fácil de obtener gracias a AMAZON. Necesitaba uno más largo y este modelo así lo es.
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