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 79 products:
Sunlite Adjustable Suspension Seatpost, 25.4mm x 350mm, Silver
5 of 5
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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 )
popular
In Store
Sunlite B00C44Q8FQyour price $32.99
BuyPART NUM 114147 
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, 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
4.5 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 
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 
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 
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
13% offretail $34.39 your price $29.99
BuyPART NUM 218549 
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 
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 
Kalloy SP-265 UNO Seatpost, 20mm, 25.4 x 350mm, Sandblast Silver BuyPART NUM 203204
Heat treated 6061 sandblast aluminum (matte finish) 2D forged 1-bolt head 30mm rail clamping area 270g (27.2mm) Item Specifications … read more
your price $19.99
BuyPART NUM 203204 
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 
Salt Plus HQ CNC Seatpost - 200mm, Oil Slick BuyPART NUM 126911
The HQ CNC Seatpost is the one post your seat wishes it had under it. Fully CNC machined goodness for all railed seats. Micro-adjust seat post … read more
15% offretail $89.99 your price $76.49 + ships free
BuyPART NUM 126911 
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 
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 
Kalloy SP-265 UNO Seatpost, 25.4 x 350mm, Sandblast Black BuyPART NUM 699915
Heat treated 6061 sandblast aluminum (matte finish) 2D forged 1-bolt head 30mm rail clamping area 270g (27.2mm) Item Specifications … read more
your price $19.99
BuyPART NUM 699915 
Eclat Torch Pivotal Seat Post 135mm Black
BuyPART NUM 884138
6061-T6 3D forged alloy Pivotal system compatible seat post Star shape wall structure for added strength Cnc finish, Eclat exclusive … read more
your price $45.99
BuyPART NUM 884138 
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 
Black Ops Alloy Anodized Seatpost, 25.4mm x 350mm, Red Seatpost BuyPART NUM 710301
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
BuyPART NUM 710301 
"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.
Weight
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.
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
Suspension seatposts are designed with comfort in mind.
Seatpost Clamp Style
This is the part number or identifier for this item from the manufacturer
On a dropper post, this is the distance that the post will drop.
Rigid seatposts are the most common type of seatpost with no suspension or dropping capability.
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.