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.
Contact Modern Bike via email, telephone, or showroom visit.
learn more
You may check the order status of a recent purchase to learn if it has been delayed, when it may ship, or if it has already been shipped.
check order status
Your Shopping Cart contains 0 products. View your cart to change product quantities, apply deal codes, or checkout.
Sort
Showing 79 products:
In Store
Kalloy 665
FSA SL-K Carbon Post, (SB0) 25.4 X 350mm
BuyPART NUM 490641
Carbon fiber mast bonded to 6061 aluminum clamp/head SB0: zero clamp offset, head is inline with post, and features a Minimal Top Clamp to … read more
Lowest Price
Ships Free10% offretail $96.00 Ends 12/5! $86.40 + ships free
BuyPART NUM 490641 
EVO E-Force Zero Seatpost, 25.4 x 400mm, Black
5 of 5
( 1 )
5 of 5 stars
( 1 review )
BuyPART NUM 729443
CNC 6061 aluminum construction No Offset 400mm length Precise seat angle adjustment with 2 Cr-Mo bolts Item Specifications … read more
5 of 5
( 1 )
5 of 5 stars
( 1 review )
your price $27.99
BuyPART NUM 729443 
Cirrus Cycles Kinekt 2.1 Suspension Seatpost - 25.4, 350 mm, 25 mm Travel, Alloy, Black, Large BuyPART NUM 325236
The Kinekt aluminum 2.1 Seatpost is sleek and versitle, providing pre-load capability to effectively isolate your body from surface vibrations and impacts. … read more
$37 offretail $249.95 Ends 12/31! $212.46 + ships free
BuyPART NUM 325236 
Sunlite Alloy Seatpost, 25.4, 350mm, Silver
BuyPART NUM 836569
Forged alloy construction Integrated index adjust seat clamp Weight: 325g Outer Diameter: 25.4mm Length: 350mm Color: … read more
your price $19.99
BuyPART NUM 836569 
Sunlite Adjustable Suspension Seatpost, 25.4mm x 350mm, Silver BuyPART NUM 114147
Adjustable pre-load design Coil spring provides plush suspension Micro adjust seat clamp Outer Diameter: 25.4mm Length: … read more
your price $31.99
BuyPART NUM 114147 
EVO E-Force AL Seatpost, Black, 25.4 x 400mm BuyPART NUM 980928
Alloy construction Length: 400 mm 20mm offset Easy single bolt seat angle adjustment Item Specifications Offset: 20mm … read more
your price $19.99
BuyPART NUM 980928 
Kalloy Uno 602 Seatpost 25.4 x 350mm Black BuyPART NUM 431555
Item Specifications Length: 350 Clamp Style: Standard Rails Diameter: 25.4 Color: Black … read more
your price $19.99
BuyPART NUM 431555 
Odyssey Intac Railed Seatpost - 25.4mm, 300mm, Black BuyPART NUM 849106
Odyssey Intac seatpost. Item Specifications Diameter: 25.4 Color: Black Clamp Style: Standard Rails Length: 300 … read more
your price $26.99
BuyPART NUM 849106 
Kalloy Uno 602 Seatpost 25.4 x 350mm Silver BuyPART NUM 914898
Item Specifications Clamp Style: Standard Rails Color: Silver … read more
your price $18.99
BuyPART NUM 914898 
Origin8 Pro-Fit Seatpost, 25.4 x 400mm, Silver BuyPART NUM 218549
Forged AL6061-T6 alloy construction Micro-adjust 2-bolt hinged clamp design Extra-long 400mm post 0mm setback Outer Diameter: … read more
your price $30.99
BuyPART NUM 218549 
Zoom 25.4 x 300mm Black Straight Alloy Post BuyPART NUM 210195
Zoom Seatposts Item Specifications Color: Black Length: 300mm Material: Aluminum Seatpost Diameter: 25.4mm Offset: 0mm Seatpost Type: Rigid … read more
your price $9.99
BuyPART NUM 210195 
Thomson Elite Seatpost Black 25.4 mm x 330 mm
4.5 of 5
( 4 )
4.5 of 5 stars average
( 4 reviews )
BuyPART NUM 283841
Over 40% stronger on ultimate strength test than the strongest production seatposts on the market. Over double the fatigue life of any … read more
4.5 of 5
( 4 )
4.5 of 5 stars average
( 4 reviews )
your price $114.95 + ships free
BuyPART NUM 283841 
Salt AM Pivotal Seat Post 260mm Black
BuyPART NUM 958069
6061-T6 alloy, 2pc design Item Specifications Color: Black … read more
10% offretail $17.99 Ends 12/9! $16.19
BuyPART NUM 958069 
Zipp Speed Weaponry Service Course SL Seatpost, 0mm Setback, 25.4mm Diameter, 400mm Length, Matte Black, C2 BuyPART NUM 870373
Matching Zipp Service Course SL bars and stems in both form and function. Dual bolt, low profile micro adjust cradle Machined internal shaft … read more
your price $160.00 + ships free
BuyPART NUM 870373 
Sunlite Unicycle Seatpost 200 x 25.4 4-Bolt BuyPART NUM 547405
4-Bolt Post Outer Diameter: 25.4mm Length: 200mm Chrome Setback: 0mm … read more
your price $12.99
BuyPART NUM 547405 
Odyssey 25.4mm Pivotal Seatpost 200mm Black BuyPART NUM 943536
Odyssey pivotal seatposts feature a laser-etched logo and are made of forged aluminum. Item Specifications Color: Black … read more
your price $25.99
BuyPART NUM 943536 
Black Ops MX-SS Seatpost, 25.4 x 250mm, Silver BuyPART NUM 831751
PIVOTAL compatible Polished Stainless steel shaft Durable and weather resistant finish Reinforced shaft design for strength … read more
your price $29.99
BuyPART NUM 831751 
Black Ops Pivot Pro Seatpost, 25.4 x 135mm, Black BuyPART NUM 507448
PIVOTAL Compatible Ultra-light 6061 forged alloy construction Reinforced wall construction Outer Diameter: 25.4mm Length: … read more
your price $29.99
BuyPART NUM 507448 
"We move forward with a desire to deliver the best possible components to our customers and a determined spirit of competition."
"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!"
Thomson is leading with innovative design for two primary markets - aerospace and cycling.
"Simplicity is the hardest design principle to follow; It's at the heart of our approach to eclat."
"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."
We define color as the main color of the item. It may have accents or highlights in other colors.
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.
Suspension seatposts are designed with comfort in mind.
Seatpost Clamp Style
This is the part number or identifier for this item from the manufacturer
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
On a dropper post, this is the distance that the post will drop.
Our Lowest Price - This product is ineligible for additional discounts or rebates.
Weight
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.