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Standard 25.8 mm Bicycle Seatposts

The seatpost diameter must match to the seat tube diamater of your frame. If replacing a seatpost, you can usually find this measurement etched near the bottom of your current post.

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Showing 8 products:

Sunlite Alloy Seatpost, 25.8, 350mm, Silver
Sunlite Alloy Seatpost, 25.8, 350mm, SilverSunlite

Forged alloy construction Integrated index adjust seat clamp Weight: 325g Outer Diameter: 25.8mm Length: 350mm Color: … read more

15% offretail $19.99 your price $16.99

BuyBuyPART NUM 876907
Kalloy Uno 602 Seatpost, 25.8 x 350mm, Silver
Kalloy Uno 602 Seatpost, 25.8 x 350mm, Silver

Kalloy Uno 602 Seatpost, 25.8 x 350mm, Silver Item Specifications Color: Silver Length: 350 Diameter: 25.8 Clamp Style: Standard Rails … read more

your price $18.99

BuyBuyPART NUM 550772
Origin8 Pro-Fit Seatpost, 25.8 x 400mm, Silver
Origin8 Pro-Fit Seatpost, 25.8 x 400mm, Silver

Forged AL6061-T6 alloy construction Micro-adjust 2-bolt hinged clamp design Extra-long 400mm post 0mm setback Outer Diameter: … read more

13% offretail $34.39 your price $29.99

BuyBuyPART NUM 127766
EVO E-Force AL Seatpost, 20mm, 25.8 x 400mm, Black
EVO E-Force AL Seatpost, 20mm, 25.8 x 400mm, Black

Alloy construction Length: 400 mm 20mm offset Easy single bolt seat angle adjustment Item Specifications Offset: 20mm … read more

your price $21.99

BuyBuyPART NUM 440559
Kalloy Uno Straight Seatpost 25.8 x 350mm Silver
Kalloy Uno Straight Seatpost 25.8 x 350mm Silver

The Kalloy Uno Seatpost is made out of one-piece forged 6061 aluminum, internally ovalized. One-piece forged 6061 aluminum, internally ovalized … read more

13% offretail $14.99 your price $12.99

BuyBuyPART NUM 462516
Sunlite

"Every year bikes change, styles and trends evolve, old bikes are in need of repairs and new bikes are waiting for that personal touch. We provide the means to keep your bike on the road and fun to ride!"

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We define color as the main color of the item. It may have accents or highlights in other colors.

These products are one of our best sellers.

In Store products are available to view in our showroom. In Store orders usually ship the same or next business day.

These models are available for online purchasing and can be shipped directly to you.

The seatpost diameter must match to the seat tube diamater of your frame. If replacing a seatpost, you can usually find this measurement etched near the bottom of your current post.

Seatpost length is measured in millimeters. It is typically measured from the bottom of the post to the center of the rail mount.

Rigid seatposts are the most common type of seatpost with no suspension or dropping capability.

Seatpost Clamp Style

Weight

Offset is often referred to as setback. This is the distance in mm that the clamp is offset from the center of the seatpost.

Seatpost Material

Our Lowest Price - This product is ineligible for additional discounts or rebates.

On a dropper post, this is the distance that the post will drop.

Weight

Buy this product and your entire order ships for free.

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