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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All 72 products:
M-Wave SP-C1 Suspension Seatpost, 25.4mm, 315mm, Travel: 40mm, Black 
BuyPART NUM 814571
Preload adjustable 40mm travel Aluminum Item Specifications Clamp Type: Standard, single bolt Primary Color: Black Seat … read more
In Store
M-Wave 252122your price $29.99
BuyPART NUM 814571 
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
popular
One remaining at this priceyour price $19.99
BuyPART NUM 431555 
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 
Pure Cycles Seat Post, 25.4mm x 350mm, Silver Seatpost BuyPART NUM 239655
The Pure Cycles seatpost is a no frills no nonsense seatpost perfect for a basic replacement Clamp Size: 25.4mm Length: 350mm Color: Silver Material: … read more
your price $25.99
BuyPART NUM 239655 
New
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
Ships Freeyour price $102.80 + ships free
BuyPART NUM 490641 
Sunlite Adjustable Suspension Seatpost, 25.4mm x 350mm, Silver
5 of 5
( 1 )
5 of 5 stars
( 1 review )
BuyPART NUM 114147
Adjustable pre-load design Coil spring provides plush suspension Micro adjust seat clamp Outer Diameter: 25.4mm Length: … read more
5 of 5
( 1 )
5 of 5 stars
( 1 review )
your price $32.99
BuyPART NUM 114147 
Sunlite Adjustable Suspension Seatpost, 25.4mm x 350mm, Black
5 of 5
( 1 )
5 of 5 stars
( 1 review )
BuyPART NUM 391465
Adjustable pre-load design Coil spring provides plush suspension Micro adjust seat clamp Outer Diameter: 25.4mm Length: … read more
5 of 5
( 1 )
5 of 5 stars
( 1 review )
your price $31.99
BuyPART NUM 391465 
Thomson Elite Seatpost Black 25.4 mm x 330 mm
4.6 of 5
( 5 )
4.6 of 5 stars average
( 5 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
4.6 of 5
( 5 )
4.6 of 5 stars average
( 5 reviews )
your price $114.95 + ships free
BuyPART NUM 283841 
FSA SL-K Carbon Post, (SB20) 25.4 X 350mm SBS BuyPART NUM 295613
Carbon fiber mast bonded to 6061 aluminum clamp/head SB20: 20mm clamp offset features an alloy two bolt Side-By-Side (SBS) head for added … read more
your price $102.80 + ships free
BuyPART NUM 295613 
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 
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 $172.00 + ships free
BuyPART NUM 870373 
Zipp Speed Weaponry Service Course SL Seatpost, 20mm Setback, 25.4mm Diameter, 400mm Length, Matte Black, C2 BuyPART NUM 492725
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 $172.00 + ships free
BuyPART NUM 492725 
Sunlite Alloy Seatpost, 25.4, 350mm, Black BuyPART NUM 505282
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 505282 
Odyssey Pivotal Seat Post, Black, 25.4x300 BuyPART NUM 943313
Forged aluminum pivotal seat posts 25.4mm diameter Low profile pivotal base Laser etched monogram logo Item Specifications … read more
your price $38.99
BuyPART NUM 943313 
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 $14.99
BuyPART NUM 210195 
M-Wave SP-C3 Seatpost, 25.4mm x 350mm, Silver BuyPART NUM 439205
25.4 x 350 mm alloy, silver Item Specifications Clamp Type: Standard, single bolt Primary Color: Silver Seat Post Diameter: 25.4mm … read more
your price $19.99
BuyPART NUM 439205 
Black Ops Alloy Anodized Seatpost, 25.4mm x 350mm, Black Seatpost
4 of 5
( 1 )
4 of 5 stars
( 1 review )
BuyPART NUM 270479
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
4 of 5
( 1 )
4 of 5 stars
( 1 review )
your price $35.98
BuyPART NUM 270479 
Black Ops Chromo Seatpost 25.4mm x 380mm BuyPART NUM 213353
Chromoly construction Classic BMX design Outer Diameter: 25.4mm Length: 380mm Color: Black Material: Cro-Mo Weight: 335g … read more
your price $19.99
BuyPART NUM 213353 
"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!"
"We move forward with a desire to deliver the best possible components to our customers and a determined spirit of competition."
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."
"Whether getting faster requires lighter components, components to give you greater control, or something else, Tioga will keep tweaking and innovating to find it."
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.
On a dropper post, this is the distance that the post will drop.
Suspension seatposts are designed with comfort in mind.
Seatpost Clamp Style
This is the part number or identifier for this item from the manufacturer
These products are one of our best sellers.
Offset is often referred to as setback. This is the distance in mm that the clamp is offset from the center of the seatpost.
Rigid seatposts are the most common type of seatpost with no suspension or dropping capability.
Limited quantities remaining.
Weight
Seatpost Material
Recently added to our product selection.
Our Lowest Price - This product is ineligible for additional discounts or rebates.
Dropper posts have the ability to change heights. This has become a choice for mountain bike riders that prefer multiple riding positions.
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.