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25.4- 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 82 products:

Alienation Billy Club 25.4mm Black Pivotal Post
Alienation Billy Club 25.4mm Black Pivotal Post

Alienation Billy Club Seatposts. … read more

Currently Sold Out

retail $30.00 your price $29.99

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Alienation Billy Club Seatpost, 320mm, 25.4mm, Black
Alienation Billy Club Seatpost, 320mm, 25.4mm, Black

Pivotal compatible Ultra-light 3D-forged 6061 alloy Internal oval construction Shot-peen anodized Outer Diameter: 25.4mm … read more

your price $29.00

BuyBuyPART NUM 703807
Alienation Billy Club, 25.4mm x 280mm, Black Seatpost
Alienation Billy Club, 25.4mm x 280mm, Black Seatpost

Pivotal compatible, layback style seatpost with a 10° back sweep Internal oval construction for increased durability and rigidity Ultra-light 3D-forged … read more

your price $53.98

BuyBuyPART NUM 104071
Black Ops Alloy Anodized Seatpost, 25.4mm x 350mm, Black Seatpost
Black Ops Alloy Anodized Seatpost, 25.4mm x 350mm, Black Seatpost

Fully anodized clamp and post in a variety of colors Available in 2 sizes and 5 colors to match your style Clamp Size: 25.4mm Length: 350mm Color: … read more

your price $35.98

BuyBuyPART NUM 270479
Black Ops Alloy Anodized Seatpost, 25.4mm x 350mm, Blue Seatpost
Black Ops Alloy Anodized Seatpost, 25.4mm x 350mm, Blue Seatpost

Fully anodized clamp and post in a variety of colors Available in 2 sizes and 5 colors to match your style Clamp Size: 25.4mm Length: 350mm Color: … read more

your price $35.98

BuyBuyPART NUM 488984
Black Ops Alloy Anodized Seatpost, 25.4mm x 350mm, Gold Seatpost
Black Ops Alloy Anodized Seatpost, 25.4mm x 350mm, Gold Seatpost

Fully anodized clamp and post in a variety of colors Available in 2 sizes and 5 colors to match your style Clamp Size: 25.4mm Length: 350mm Color: … read more

your price $35.98

BuyBuyPART NUM 332678
Black Ops Alloy Anodized Seatpost, 25.4mm x 350mm, Purple Seatpost
Black Ops Alloy Anodized Seatpost, 25.4mm x 350mm, Purple Seatpost

Fully anodized clamp and post in a variety of colors Available in 2 sizes and 5 colors to match your style Clamp Size: 25.4mm Length: 350mm Color: … read more

your price $35.98

BuyBuyPART NUM 799616
Black Ops Alloy Anodized Seatpost, 25.4mm x 350mm, Red Seatpost
Black Ops Alloy Anodized Seatpost, 25.4mm x 350mm, Red Seatpost

Fully anodized clamp and post in a variety of colors Available in 2 sizes and 5 colors to match your style Clamp Size: 25.4mm Length: 350mm Color: … read more

your price $35.98

BuyBuyPART NUM 710301
Black Ops Chromo Seatpost 25.4mm x 380mm
Black Ops Chromo Seatpost 25.4mm x 380mm

Chromoly construction Classic BMX design Outer Diameter: 25.4mm Length: 380mm Color: Black Material: Cro-Mo Weight: 335g … read more

your price $19.99

BuyBuyPART NUM 213353
Black Ops Fluted Seatpost with Clamp, 25.4 x 350, Blue/Silver
Black Ops Fluted Seatpost with Clamp, 25.4 x 350, Blue/Silver

Anodized silver clamp with an anodized and fluted grooved post Available in a variety of colors to match your style Outer Diameter: … read more

Currently Sold Out

your price $26.99

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Black Ops Fluted Seatpost with Clamp, 25.4 x 350mm, Blue
Black Ops Fluted Seatpost with Clamp, 25.4 x 350mm, Blue

Anodized silver clamp with an anodized and fluted grooved post Available in a variety of colors to match your style Outer Diameter: … read more

Currently Sold Out

your price $26.99

InfoInfo
Black Ops Fluted Seatpost with Clamp, 25.4 x 350mm, Gold
Black Ops Fluted Seatpost with Clamp, 25.4 x 350mm, Gold

Anodized silver clamp with an anodized and fluted grooved post Available in a variety of colors to match your style Outer Diameter: … read more

Currently Sold Out

your price $26.99

InfoInfo
Black Ops Fluted Seatpost with Clamp, 25.4 x 350mm, Gold/Silver
Black Ops Fluted Seatpost with Clamp, 25.4 x 350mm, Gold/Silver

Anodized silver clamp with an anodized and fluted grooved post Available in a variety of colors to match your style Outer Diameter: … read more

Currently Sold Out

your price $26.99

InfoInfo
Black Ops Fluted Seatpost with Clamp, 25.4 x 350mm, Red
Black Ops Fluted Seatpost with Clamp, 25.4 x 350mm, Red

Anodized silver clamp with an anodized and fluted grooved post Available in a variety of colors to match your style Outer Diameter: … read more

Currently Sold Out

your price $26.99

InfoInfo
Black Ops Fluted Seatpost with Clamp, 25.4 x 350mm, Red/Silver
Black Ops Fluted Seatpost with Clamp, 25.4 x 350mm, Red/Silver

Anodized silver clamp with an anodized and fluted grooved post Available in a variety of colors to match your style Outer Diameter: … read more

Currently Sold Out

your price $26.99

InfoInfo
Black Ops Fluted Seatpost with Clamp, 25.4 x 350mm, Silver
Black Ops Fluted Seatpost with Clamp, 25.4 x 350mm, Silver

Anodized silver clamp with an anodized and fluted grooved post Available in a variety of colors to match your style Outer Diameter: … read more

Currently Sold Out

your price $26.99

InfoInfo
Black Ops Fluted Seatpost with Clamp, 25.4mm x 350mm, Black
Black Ops Fluted Seatpost with Clamp, 25.4mm x 350mm, Black

Anodized silver clamp with an anodized and fluted grooved post Available in a variety of colors to match your style Outer Diameter: … read more

your price $26.99

BuyBuyPART NUM 377573
Black Ops Fluted Seatpost, 25.4mm x 350mm, Sil Seatpost
Black Ops Fluted Seatpost, 25.4mm x 350mm, Sil Seatpost

Anodized silver clamp with an anodized and fluted grooved post Available in a variety of colors to match your style Clamp Size: 25.4mm Length: 350mm … read more

your price $39.99

BuyBuyPART NUM 682674
Black Ops MX-SS Seatpost, 25.4 x 250mm, Silver
Black Ops MX-SS Seatpost, 25.4 x 250mm, Silver

PIVOTAL compatible Polished Stainless steel shaft Durable and weather resistant finish Reinforced shaft design for strength … read more

23% offretail $29.99 your price $22.99

BuyBuyPART NUM 831751
Black Ops Pivot Pro Seatpost, 25.4 x 135mm, Black
Black Ops Pivot Pro Seatpost, 25.4 x 135mm, Black

PIVOTAL Compatible Ultra-light 6061 forged alloy construction Reinforced wall construction Outer Diameter: 25.4mm Length: … read more

23% offretail $29.99 your price $22.99

BuyBuyPART NUM 507448
Full Speed Ahead

"We move forward with a desire to deliver the best possible components to our customers and a determined spirit of competition."

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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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Thomson

Thomson is leading with innovative design for two primary markets - aerospace and cycling.

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Eclat

"Simplicity is the hardest design principle to follow; It's at the heart of our approach to eclat."

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Tioga

"Whether getting faster requires lighter components, components to give you greater control, or something else, Tioga will keep tweaking and innovating to find it."

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We The People

"W-T-P have always taken a lot of pride in ourselves and in building bikes that are capable of taking everything a rider throws at them. We are constantly at the forefront of developing and manufacturing materials that will with stand hard and furious riding and our designs are made to combat common breaks and bends."

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

Weight

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.

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

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

Seatpost Clamp Style

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

Recently added to our product selection.

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

Dropper posts have the ability to change heights. This has become a choice for mountain bike riders that prefer multiple riding positions.

Suspension seatposts are designed with comfort in mind.

Weight

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

Buy this product and your entire order ships for free.

Some orders are inelligible for delivery discounts. See offer details for disqualifying products and destinations.