Seatposts compared

6 seatposts we carry, side by side. Specs come from each listing; prices and delivery windows are live.

How to choose

Choose first by seatpost diameter and length to match your frame, then by material and head style. Most buyers deciding between standard replacements should compare aluminum options like Hollow Aluminum Seat Post and Bike Seatpost 6061 Aluminum, while Carbon Fiber Seatpost with Clamp is the carbon fiber example.

Item	Size / specfrom the listing title	Materialfrom the listing	Package sizeshipping box	Package weightshipping weight	Deliveryto the US	Pricelive
31.8mm Aluminum Seat Post	31.8mm	aluminum	16.5 × 4.7 × 2.4 in42 × 12 × 6 cm	13.1 oz370 g	12–22 days	$17.59
Hollow Aluminum Seat Post	27.2 Mm	aluminum	12.6 × 4.5 × 2.4 in32 × 11.5 × 6 cm	9.2 oz260 g	12–22 days	$24.14
Adjustable Offset Seatpost	—	aluminum alloy	13.4 × 4.7 × 2.8 in34 × 12 × 7 cm	9.5 oz270 g	12–22 days	$26.99
Carbon Fiber Seatpost with Clamp	—	carbon fiber	23.6 × 3.5 × 2.8 in60 × 9 × 7 cm	14.1 oz400 g	11–21 days	$45.79
Bike Seatpost 6061 Aluminum	300 Mm	aluminum	13.8 × 4.7 × 3.0 in35 × 12 × 7.5 cm	9.5 oz270 g	12–22 days	$19.49
Brushed Silver Seatpost	—	—	23.6 × 4.3 × 2.8 in60 × 11 × 7 cm	14.1 oz400 g	11–21 days	$102.69

“—” means the listing doesn’t state it. Package size and weight describe the shipping box. Every order ships free to the US; 30-day returns.

Specifications