Aluminum 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 29 products:
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 )
popular
Ships Freeyour price $114.95 + ships free
BuyPART NUM 283841 
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 
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 
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 
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 
Kalloy SP-200 Seatpost, 25.4 X 350mm Silver
5 of 5
( 2 )
5 of 5 stars average
( 2 reviews )
BuyPART NUM 665582
Straight post for saddles with built-in clamp Machined 2014 anodized aluminum Item Specifications diameter: 25.4mm length: 350mm … read more
5 of 5
( 2 )
5 of 5 stars average
( 2 reviews )
your price $7.99
BuyPART NUM 665582 
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 $36.99
BuyPART NUM 943536 
Sunlite Alloy Pillar Seatpost, 25.4, 350mm, Silver, No Clamp BuyPART NUM 681929
Forged alloy construction Pillar style design Outer Diameter: 25.4mm Length: 350mm Color: Silver Material: Alloy … read more
your price $13.99
BuyPART NUM 681929 
The Shadow Conspiracy Railed Seatpost, 25.4 x 200mm, Black BuyPART NUM 669649
Classic alloy railed post with CNC'd 6061 alloy micro adjust guts Dual micro adjust bolt head 200mm length Outer Diameter: 25.4mm … read more
your price $40.99
BuyPART NUM 669649 
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
30% offretail $46.99 your price $32.89
BuyPART NUM 884138 
BSD Pivotal Seatpost Black
BuyPART NUM 759391
BSD Seatposts Item Specifications Color: Black Diameter: 25.4mm Seatpost Type: BMX Clamp Style: Pivotal Defined Color: Black Weight: 100 … read more
your price $25.99
BuyPART NUM 759391 
Zoom 25.4 x 300mm Silver Straight Alloy Post BuyPART NUM 999596
Zoom Seatposts Item Specifications Color: Silver Length: 300mm Material: Aluminum Seatpost Diameter: 25.4mm Offset: 0mm Seatpost Type: Rigid … read more
your price $9.99
BuyPART NUM 999596 
We The People Socket Pivotal Post 135mm High Polished with Built In 17mm Socket 
BuyPART NUM 529567
3D forged 6061-T6 alloy pivotal system compatible seat post Integrated 17mm socket function Item Specifications Length: 135 Clamp … read more
15% offretail $58.99 your price $50.14
BuyPART NUM 529567 
Sunlite Alloy Pillar Seatpost, 25.4, 350mm, Black, No Clamp BuyPART NUM 539790
Forged alloy construction Pillar style design Outer Diameter: 25.4mm Length: 350mm Color: Black Material: Alloy … read more
your price $15.99
BuyPART NUM 539790 
Sunday Pivotal Seatpost, 25.4 x 200mm, Black BuyPART NUM 320175
Sunday Bikes pivotal seatpost. Item Specifications Color: Black Clamp Style: Pivotal … read more
your price $29.99
BuyPART NUM 320175 
Stolen Tuner Pivotal Post 220 Black BuyPART NUM 678877
Stolen Parts Tuner Seatposts Item Specifications Color: Black Length: 220mm Offset: 0mm Seatpost Type: BMX Clamp Style: Pivotal Defined Color: … read more
your price $29.99
BuyPART NUM 678877 
Salt Plus HQ CNC Seatpost - 200mm, Black BuyPART NUM 599462
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 $57.99 your price $49.29
BuyPART NUM 599462 
Kalloy Uno Straight Seatpost 25.4 x 350mm Silver BuyPART NUM 280390
The Kalloy Uno Seatpost is made out of one-piece forged 6061 aluminum, internally ovalized. One-piece forged 6061 aluminum, internally ovalized … read more
your price $14.99
BuyPART NUM 280390 
Thomson is leading with innovative design for two primary markets - aerospace and cycling.
"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!"
"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.
Weight
These products are one of our best sellers.
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
Rigid seatposts are the most common type of seatpost with no suspension or dropping capability.
Seatpost Clamp Style
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
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