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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 788 ratings

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Black 450*25.4mm

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

Frequently bought together

$25.99
Get it as soon as Sunday, Mar 31
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Sold by UPANBIKE US and ships from Amazon Fulfillment.
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$39.99
Get it as soon as Sunday, Mar 31
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Sold by VELMIA® USA and ships from Amazon Fulfillment.
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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

Feedback

UPANBIKE

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
788 global ratings

Customers say

Customers like the quality, fit, performance, value, and height of the bicycle seatpost. For example, they mention it's well made, fits perfectly, works great, and is good value for money. Some appreciate the ease of installation, and weight. Opinions are mixed on appearance.

AI-generated from the text of customer reviews

63 customers mention49 positive14 negative

Customers like the quality of the bicycle seatpost. They say it is well-made, solid, and holds up fine. Some mention that the finish is good and the clamp is strong. Overall, most are satisfied with the quality and performance of the product.

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

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

"...I am 6‘7“ tall and have a 36” inseam. This post is perfect...." 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

38 customers mention29 positive9 negative

Customers like the fit of the bicycle seatpost. They say it's just the right size, provides the added length needed, and is super long. Some like the fact that it'll give them extra room to adjust the seat height.

"...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

"...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

"I am generally pleased with the extra long seat post. I gives me the height that I needed to ride my Raleigh Venture trail bike comfortably...." Read more

20 customers mention20 positive0 negative

Customers are satisfied with the performance of the bicycle seatpost. They mention it works great, has zero problems, and is good for the goal they're trying to accomplish. Some say the post is easy to install and gives them the right height. Some mention that the post works as an OEM replacement and that the longer post worked perfectly.

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

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

"...Update, still hasn't worsened nor improved, still works fine several months later and I'm riding on it more often as well." Read more

16 customers mention16 positive0 negative

Customers appreciate the value of the bicycle seatpost. They say it does the job at a great price, with an excellent length.

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

"...to me so I would say this seat post is still a good purchase for the price overall." Read more

11 customers mention11 positive0 negative

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

"...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. They mention that it's simple and works well.

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

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

"...budget friendly. C) easy installation w/instruction and tool." Read more

8 customers mention8 positive0 negative

Customers like the weight of the bicycle seatpost. They say that it is light weight, and has secure attachments. Some customers also mention that the post 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

Reviewed in the United States on September 1, 2020
Color: Black 450*25.4mmVerified Purchase
One person found this helpful
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Reviewed in the United States on July 19, 2023
Color: Black 450*25.4mmVerified Purchase
5 people found this helpful
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Reviewed in the United States on February 12, 2024
Color: Black 450*25.4mmVerified Purchase
Reviewed in the United States on August 14, 2023
Color: Black 450*30.4mmVerified Purchase
2 people found this helpful
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Reviewed in the United States on December 29, 2023
Color: Black 450*30.9mmVerified Purchase
Reviewed in the United States on October 30, 2022
Color: Black 450*30.4mmVerified Purchase
6 people found this helpful
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Reviewed in the United States on November 7, 2023
Color: Black 450*30.4mmVerified Purchase
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Reviewed in the United States on September 29, 2023
Color: Black 450*30.9mmVerified Purchase

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
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
Color: Black 450*31.6mmVerified Purchase
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
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
Gilberto A.
4.0 out of 5 stars buen articulo
Reviewed in Mexico on July 5, 2023
Color: Black 450*27.2mmVerified Purchase