Aluminum 350+ mm Bicycle Seatposts
Seatpost length is measured in millimeters. It is typically measured from the bottom of the post to the center of the rail mount.
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Showing 353 products:
Cane Creek Thudbuster ST G4 Suspension Seatpost - 30.9 x 375mm, 50mm, Black
BuyPART NUM 705891
Building on Thudbuster's proven parallel linkage technology Cane Creek has completely re-designed the seatpost for increased durability, a higher rider … read more
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In Store
Ships Freeyour price $199.99 + ships free
BuyPART NUM 705891 
Ritchey Classic 2-Bolt Post, 27.2 x 350mm, Silver
5 of 5
( 2 )
5 of 5 stars average
( 2 reviews )
BuyPART NUM 644997
3D forged 2014 aluminum shaft, 2-bolt adjustable 2014 aluminum head 38mm rail clamping area. 245g (27.2x350mm) Item Specifications … read more
5 of 5
( 2 )
5 of 5 stars average
( 2 reviews )
your price $69.95
BuyPART NUM 644997 
Thomson Elite Set Back Seatposts - Black - 31.6 x 410 mm
BuyPART NUM 786360
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 from one … read more
your price $114.95 + ships free
BuyPART NUM 786360 
Crank Brothers Highline 3 Dropper Seatpost - 27.2, 80mm, Black BuyPART NUM 694209
The all-new Highline delivers infinite adjustment, smooth feel, and easy installation for any bike. Remote sold separately. Shorter insertion … read more
$24 offretail $249.00 your price $224.10 + ships free
BuyPART NUM 694209 
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 
Dimension Suspension Seatpost 27.2mm x 350mm Silver
4.7 of 5
( 3 )
4.7 of 5 stars average
( 3 reviews )
BuyPART NUM 892805
Dimension Seatposts Item Specifications Length: 350mm Seatpost Diameter: 27.2mm Seatpost Type: Suspension Clamp Style: … read more
4.7 of 5
( 3 )
4.7 of 5 stars average
( 3 reviews )
your price $36.99
BuyPART NUM 892805 
Sunlite Alloy Seatpost, 25.8, 350mm, Silver BuyPART NUM 876907
Forged alloy construction Integrated index adjust seat clamp Weight: 325g Outer Diameter: 25.8mm Length: 350mm Color: … read more
15% offretail $19.99 your price $16.99
BuyPART NUM 876907 
Sunlite Alloy Pillar Seatpost, 27, 350mm, Black, No Clamp BuyPART NUM 484552
Forged alloy construction Pillar style design Outer Diameter: 27.0mm Length: 350mm Color: Black Material: Alloy … read more
your price $15.99
BuyPART NUM 484552 
Thomson Elite Covert Dropper Seatpost: 30.9 x 400mm 125mm Travel BuyPART NUM 213345
Item Specifications Length: 400 Diameter: 30.9 Travel: 125 Clamp Style: Std Rails … read more
Clearance$150 offretail $479.95 your price $329.95 + ships free
BuyPART NUM 213345 
Cane CreekThudbuster LT G4 Suspension Seatpost - 27.2 x 390mm, 90mm, Black
5 of 5
( 1 )
5 of 5 stars
( 1 review )
BuyPART NUM 405955
Building on Thudbuster's proven parallel linkage technology, Cane Creek has completely re-designed the seatpost for increased durability, a higher rider … read more
5 of 5
( 1 )
5 of 5 stars
( 1 review )
your price $199.99 + ships free
BuyPART NUM 405955 
SR Suntour NCX Suspension Seatpost: 27.2 x 350mm, 50mm Travel, Black BuyPART NUM 834012
A suspension seatpost that offers a coil spring with adjustable preload intended for city/comfort riding. Brass pivot bushings Alloy construction … read more
your price $151.99 + ships free
BuyPART NUM 834012 
Cane Creek Thudbuster ST G4 Suspension Seatpost - 31.6 x 375mm, 50mm, Black
4 of 5
( 1 )
4 of 5 stars
( 1 review )
BuyPART NUM 290307
Building on Thudbuster's proven parallel linkage technology Cane Creek has completely re-designed the seatpost for increased durability, a higher rider … read more
4 of 5
( 1 )
4 of 5 stars
( 1 review )
your price $199.99 + ships free
BuyPART NUM 290307 
Paul Component Engineering Tall and Handsome Seatpost 27.2mm Black BuyPART NUM 897791
Our new Tall & Handsome isn't the lightest seat post ever made, but we think it may be among the easiest to use and nicest looking. Like all PAUL components … read more
Lowest Price$15 offretail $205.00 your price $189.99 + ships free
BuyPART NUM 897791 
Thomson Elite Set Back Seatposts - Black - 27.2 x 410 mm BuyPART NUM 404104
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 404104 
Paul Tall & Handsome Seatpost 27.2mm Polished
5 of 5
( 2 )
5 of 5 stars average
( 2 reviews )
BuyPART NUM 584606
Paul Component Engineering Seatposts Item Specifications Color: Silver Weight: 320g Length: 360mm Material: Aluminum Seatpost Diameter: 27.2mm … read more
5 of 5
( 2 )
5 of 5 stars average
( 2 reviews )
$25 offretail $225.00 your price $200.00 + ships free
BuyPART NUM 584606 
Thomson Covert Dropper Seatpost, 150mm, 31.6 x 450mm, Black BuyPART NUM 646771
Applying four decades of expertise, Thomson has set the bar with the Covert dropper Custom made Norglide bearing bushings and Trelleborg … read more
your price $479.95 + ships free
BuyPART NUM 646771 
Paul Component Engineering Tall and Handsome Seatpost 27.2mm Silver BuyPART NUM 314933
Our new Tall & Handsome isn't the lightest seat post ever made, but we think it may be among the easiest to use and nicest looking. Like all PAUL components … read more
your price $180.00 + ships free
BuyPART NUM 314933 
Redshift Dual-Position Seatpost: Aluminum 27.2x350 Black BuyPART NUM 833144
A seatpost that pivots at the top changing from a 16mm rearward offset to a 34mm forward offset. Linkage design maintains constant saddle-to-pedal … read more
your price $199.99 + ships free
BuyPART NUM 833144 
Thomson Elite Seatpost Black 27.2 mm x 410 mm
4.5 of 5
( 4 )
4.5 of 5 stars average
( 4 reviews )
BuyPART NUM 752601
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
4.5 of 5
( 4 )
4.5 of 5 stars average
( 4 reviews )
your price $114.95 + ships free
BuyPART NUM 752601 
Thomson Elite Seatpost Black 31.6 mm x 367 mm
4.5 of 5
( 4 )
4.5 of 5 stars average
( 4 reviews )
BuyPART NUM 227509
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
4.5 of 5
( 4 )
4.5 of 5 stars average
( 4 reviews )
your price $114.95 + ships free
BuyPART NUM 227509 
"The world's best choose Cane Creek. A key element of Cane Creek's mission is to support the sport of cycling, including racing, charitable activities and cycling advocacy. Cane Creek believes strongly in the power of bicycles and their potential to effect positive change in our society. To that end, Cane Creek supports athletes and teams whose purpose encompasses more than competitive racing, such as getting more people on bikes, improving or promoting a healthy lifestyle, and making our world better through the use of a bike."
"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.'
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!"
Dimension makes quality components to repair or custom-fit the vast majority of bikes being ridden today, and provide the accessories that make them fun to ride.
"At Salsa, we believe a sense of adventure makes life better. The bicycle can be so much more than just a bike; it's a path to new places, new people, and amazing experiences."
Driven by the vision of becoming a worldwide known manufacturer of bicycle components, DT Swiss expanded its product range over the years. Today DT Swiss has established itself as a leading manufacturer of spokes, nipples, hubs, rims, complete wheels as well as suspension systems.
"Whisky Parts Co. makes high quality carbon components designed with unique features that help you do more with your bike and stand out from the rest. We believe that our work can help every rider find a new level of confidence and performance with our sturdy and lightweight forks, bars, rims and more. So whether you are building a new bike or upgrading one you already have, you'll find an uncommon attention to detail in every product we offer."
"We move forward with a desire to deliver the best possible components to our customers and a determined spirit of competition."
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
On a dropper post, this is the distance that the post will drop.
Suspension seatposts are designed with comfort in mind.
Seatpost Clamp Style
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.
Clearance items can save you big.
Seatpost length is measured in millimeters. It is typically measured from the bottom of the post to the center of the rail mount.
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.