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Best seat posts - October 2025

Last Updated - October 4, 2025

1
Best Choice

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

FIFTY-FIFTY

FIFTY-FIFTY Mountain Bike Seat Post, 27.2/30.9/31.6mm Aluminum Alloy Bicycle Seat Post, 350mm Length for MTB, Road Bike, E-MTB (27.2mm)

FIFTY-FIFTY

$29.99

More Details
Main highlights
- Two-Bolt Design: Two-bolt design for easy adjustment the tilt angle of the saddle with the clip to make the saddle reach the best riding comfort and keep the saddle in its position
- Strong and Durable: The bike seat post is made of 6061 aluminum alloy and CNC full machined
- One Piece Forge and Lightweight: The bike seatpost is one piece forge so it is only 330g(27.2mm)/315g(30.9mm)/345g (31.6mm)
- Diameter: 27.2mm/30.9mm/31.6mm, Total length: 350mm (Adjustable height), Zero offset
- Adjustable Seatpost Height: Our MTB seatpost is engraved with clear height marks, easy to adjust the height of the seat post bike to reach the right height for you
$29.99
2

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

DJC Components

DJC Bike Suspension Seatpost Shock Absorber Damper Post 27.2 30.9 31.6 mm, Lightweight Aluminum Body(Black Head,27.2mm)

DJC Components

$29.90

More Details
Main highlights
- Spring Coil Suspension: Build-in spring coil and damper rubber absorb the vibration while riding, the seat post comfort your riding experience, improve the shocks. Rebound force adjustable by tighten or loose the bottom screw. Suspension travel 42mm/ 1.65inch.
- Pay Attention to Diameter Before Buy.Wrong diameter will not able to install,27.2mm/28.6mm/30mm/30.4/30.9/31.6/33.9 they are different and not exchangeable. You can see your seatpost diameter if you take out it from the bike frame.
- Excellent Quality: Produced by world famous bike components supplier HL CORP and comply to international bicycle safety standard ISO 4210. Full aluminum 6061 body ensure the lightweight, 27.2mm weight 498g/ 1.1lbs, 31.6mm weight 508g/ 1.2lbs. Surface anodized.
- Clamp Angle Adjustable: Saddle clamp angle can adjust in -5 degree to +18 degree. Clamp offset 14mm.
- 2 Years Coverage: We are confident to the product quality and offer 2 years coverage. It fit for riders weight 50kg/ 110lbs to 100kg/ 220lbs(Clockwise the bottom screw if you are heavy, anticlockwise it if you are lightweight).
$29.90
3
Best Value
17% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Bynccea
17% Off

Bynccea Bike Seat Post 27.2mm 30.9mm 31.6mm Bicycle SeatPost 400mm for Mountain Bike Road Bikes MTB BMX

Bynccea

$13.99

$16.99
(17% Off)

More Details
Main highlights
- 【12-MONTH WARRANTY】:Quality guarantee.If you’re not 100% satisfied with your bike seatposts, simply send us a message and we’ll take care of you.
- Pay Attention to Choose Correct Diameter Size:Take out your current seatpost, the diameter marked on it’s lower area. Then buy same size from the option.
- Mountain Bike Seatpost Size: 30.9mm,Total length: 400mm.
- Material:Forged aluminum alloy 6061 T6.
- Bynccea MTB seatpost with adjustable head,convenient to install.
$13.99
$16.99 (17% Off)
4

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Aeibxiy

Aeibxiy Bike SeatPost 27.2mm 30.9mm 31.6mm Aluminum Alloy 350mm Bicycle Seat Post for Mountain Road Bikes BMX

Aeibxiy

$15.19

$15.99
(5% Off)

More Details
Main highlights
- Size: Diameter: 27.2mm 30.9mm 31.6mm; Length: 350 mm (13.8inch)
- Pay Attention: Please measure the original bike seatpost diameter and choose the correct size before purchasing.
- Material: made of high strength aluminum alloy, light weight, anti-rust and durable.
- Easy installation: Unbolt your old seat and remove your seatpost then bolt on your seat to your new seat post and install it into your bike frame.
- Compatibility: Suitable for most mountain bikes, road bikes, downhill bikes, BMX, DH, etc.
$15.19
$15.99 (5% Off)
5

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

DJC Components

DJC Bike Suspension Seatpost Shock Absorber Damper Post 27.2 30.9 31.6 mm, Lightweight Aluminum Body(Black Head,31.6mm)

DJC Components

$29.80

More Details
Main highlights
- Spring Coil Suspension: Build-in spring coil and damper rubber absorb the vibration while riding, the seat post comfort your riding experience, improve the shocks. Rebound force adjustable by tighten or loose the bottom screw. Suspension travel 42mm/ 1.65inch.
- Pay Attention to Diameter Before Buy.Wrong diameter will not able to install,27.2mm/28.6mm/30mm/30.4/30.9/31.6/33.9 they are different and not exchangeable. You can see your seatpost diameter if you take out it from the bike frame.
- Excellent Quality: Produced by world famous bike components supplier HL CORP and comply to international bicycle safety standard ISO 4210. Full aluminum 6061 body ensure the lightweight, 27.2mm weight 498g/ 1.1lbs, 31.6mm weight 508g/ 1.2lbs. Surface anodized.
- Clamp Angle Adjustable: Saddle clamp angle can adjust in -5 degree to +18 degree. Clamp offset 14mm.
- 2 Years Coverage: We are confident to the product quality and offer 2 years coverage. It fit for riders weight 50kg/ 110lbs to 100kg/ 220lbs(Clockwise the bottom screw if you are heavy, anticlockwise it if you are lightweight).
$29.80

Best seat posts - October 2025

FIFTY-FIFTY Mountain Bike Seat Post, 27.2/30.9/31.6mm Aluminum Alloy Bicycle Seat Post, 350mm Length for MTB, Road Bike, E-MTB (27.2mm)

DJC Bike Suspension Seatpost Shock Absorber Damper Post 27.2 30.9 31.6 mm, Lightweight Aluminum Body(Black Head,27.2mm)

Bynccea Bike Seat Post 27.2mm 30.9mm 31.6mm Bicycle SeatPost 400mm for Mountain Bike Road Bikes MTB BMX

Aeibxiy Bike SeatPost 27.2mm 30.9mm 31.6mm Aluminum Alloy 350mm Bicycle Seat Post for Mountain Road Bikes BMX

DJC Bike Suspension Seatpost Shock Absorber Damper Post 27.2 30.9 31.6 mm, Lightweight Aluminum Body(Black Head,31.6mm)

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