26.8 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 23 products:
Kalloy SP-500 Suspension Seatpost, 26.8 x 350mm, Silver
4.8 of 5
( 4 )
4.8 of 5 stars average
( 4 reviews )
BuyPART NUM 600814
4.8 of 5
( 4 )
4.8 of 5 stars average
( 4 reviews )
popular
In Store
Kalloy 665your price $33.38
BuyPART NUM 600814 
Kalloy SP-265 UNO Seatpost, 26.8 x 350mm, Sandblast Black BuyPART NUM 804409
Heat treated 6061 sandblast aluminum (matte finish) 2D forged 1-bolt head 30mm rail clamping area 270g Item Specifications … read more
your price $19.99
BuyPART NUM 804409 
Thomson Elite Seatpost Silver - 26.8 mm x 330 mm
4.6 of 5
( 5 )
4.6 of 5 stars average
( 5 reviews )
BuyPART NUM 260426
Over 40% stronger on ultimate strength test than the strongest production seatposts on the market. Over double the fatigue life of any other production … read more
4.6 of 5
( 5 )
4.6 of 5 stars average
( 5 reviews )
Three remaining at this price
Ships Freeyour price $114.95 + ships free
BuyPART NUM 260426 
Origin8 Pro-Fit Seatpost, 26.8 x 400mm, Black BuyPART NUM 468735
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 468735 
Thomson Elite Set Back Seatposts - Black - 26.8 x 330 mm BuyPART NUM 536978
The Elite Set Back Thomson Seatpost has a post and cradle which are machined from one piece of 7000 aluminum. Post and cradle are machined … read more
your price $114.95 + ships free
BuyPART NUM 536978 
Thomson Elite Seatpost Black 26.8 mm x 330 mm
4.6 of 5
( 5 )
4.6 of 5 stars average
( 5 reviews )
BuyPART NUM 256538
Over 40% stronger on ultimate strength test than the strongest production seatposts on the market. Over double the fatigue life of any other production … read more
4.6 of 5
( 5 )
4.6 of 5 stars average
( 5 reviews )
your price $114.95 + ships free
BuyPART NUM 256538 
Promax SP-1 Seatpost - 26.8 x 400mm, Black BuyPART NUM 803433
The SP-1 seatpost is made using lightweight, 2014, aluminum alloy tubing and a cold forged, aluminum, alloy head. The two-bolt head design ensures solid … read more
your price $39.99
BuyPART NUM 803433 
Ritchey Comp 2-Bolt Post 400x26.8mm Alloy Matte Black
BuyPART NUM 217764
3D forged 2014 aluminum shaft, 2-bolt adjustable 2014 aluminum head 38mm rail clamping area Diameter: 26.8mm Length: 400mm Setback: 25mm Color: … read more
your price $57.95
BuyPART NUM 217764 
Sunlite Alloy Seatpost, 26.8, 350mm, Black
BuyPART NUM 337733
Forged alloy construction Integrated index adjust seat clamp Weight: 325g Outer Diameter: 26.8mm Length: 350mm Color: … read more
your price $19.99
BuyPART NUM 337733 
Sunlite Alloy Seatpost, 26.8, 350mm, Silver BuyPART NUM 523085
Forged alloy construction Integrated index adjust seat clamp Weight: 325g Outer Diameter: 26.8mm Length: 350mm Color: … read more
your price $19.99
BuyPART NUM 523085 
Sunlite Alloy Pillar Seatpost, 26.8, 350mm, Silver, No Clamp BuyPART NUM 345300
Forged alloy construction Pillar style design Outer Diameter: 26.8mm Length: 350mm Color: Silver Material: Alloy … read more
your price $13.99
BuyPART NUM 345300 
Kalloy Uno Straight Seatpost 26.8 x 350mm Silver BuyPART NUM 114239
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 114239 
Alienation Billy Club Seatpost, 320mm, 26.8mm, Black BuyPART NUM 529948
Pivotal compatible Ultra-light 3D-forged 6061 alloy Internal oval construction Shot-peen anodized Outer Diameter: 26.8mm … read more
your price $31.99
BuyPART NUM 529948 
Answer BMX Alloy Pivotal Seatpost, 26.8 x 300mm, Black
BuyPART NUM 147167
Answer BMX 26.8mm Alloy Pivotal Seatpost, Black Item Specifications Color: Black Diameter: 26.8 Clamp Style: Pivotal … read more
10% offretail $33.95 your price $30.56
BuyPART NUM 147167 
EVO E-Force AL Seatpost, 20mm, 26.8 x 400mm, Black BuyPART NUM 322556
Alloy construction Length: 400 mm 20mm offset Easy single bolt seat angle adjustment Item Specifications Offset: 20mm … read more
your price $21.99
BuyPART NUM 322556 
New
AnswerBMX Carbon Pivotal Seatpost, 26.8x300mm - Carbon BuyPART NUM 702938
Super lightweight carbon fiber post with CNC machined aluminum Pivotal head Pivotal design allows seat to be dropped lower than possible … read more
your price $79.99 + ships free
BuyPART NUM 702938 
Thomson is leading with innovative design for two primary markets - aerospace and cycling.
"Ritchey bicycle components have been raced to victory in some of the biggest cycling competitions in the world including the UCI World Championships, the Tour de France and the Olympics and it all began in a simple garage in Menlo Park, California with Tom Ritchey.'
"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 define color as the main color of the item. It may have accents or highlights in other colors.
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.
Suspension seatposts are designed with comfort in mind.
Seatpost Clamp Style
This is the part number or identifier for this item from the manufacturer
Rigid seatposts are the most common type of seatpost with no suspension or dropping capability.
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
Limited quantities remaining.
Our Lowest Price - This product is ineligible for additional discounts or rebates.
On a dropper post, this is the distance that the post will drop.
Recently added to our product selection.
Weight
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