Seatposts

Thomson seatposts are the standard by which all other seatposts are measured. Lightweight with the strength of a Thomson, our bicycle seatposts give you a superior ride. See our warranty information here.

Precision-Machined Bike Seatposts Built to Ride Hard

Made in the USA with aerospace-level machining and materials, each post is designed to handle tough rides and fine-tuned adjustments. Known for their strength and lightweight construction, Thomson seatposts are trusted by riders around the world. Whether you’re racing, climbing, or cruising, there’s a Thomson bike seatpost built for your ride.

The Industry Standard

Elite Seatpost

The Elite is the post that set the bar for all others. Built from one piece of 7000-series aluminum, it's lightweight, durable, and tested to outlast the competition. It's over 40% stronger on ultimate strength tests than the strongest production seat posts on the market.

41mm saddle rail grip
Infinite tilt from -5° to +29°
Available in multiple lengths and diameters

Precision Weight Savings

Masterpiece Seatpost

The Masterpiece trims 40 grams off the Elite by machining every surface inside and out to save weight without sacrificing strength. It offers unmatched precision and performance for riders who count every gram.

Weighs as little as 161g
Aerospace-grade aluminum
Captive parts for easy setup

Ride-Long Titanium Durability

Titanium Seatpost

The seatpost designed to last a lifetime. The Titanium seatpost brings shock-absorbing performance, long-term durability, and a clean look to your prized ride.

Ti hardware + alloy clamp
Impact-spreading design
Perfect for gravel, mountain, or road bikes

High-Performance Carbon Fiber

Masterpiece C (Carbon)

Built from Toray carbon fiber with nano epoxy, this carbon seatpost is as refined as it is rugged. Paired with titanium hardware and alloy clamps, it’s ideal for riders who want lightweight without losing durability.

Lightweight carbon construction
Ti bolts and alloy clamp
Designed for race-ready bike frames

How to Choose the Right Bike Seatpost

Choose your seatpost based on the type of riding you do and your bike’s fit. Mountain riders may want dropper or rigid posts for rough terrain, while gravel and road riders often prefer lighter options like carbon fiber. Make sure the post fits your frame and supports your saddle position.

Build Your Dream Bike

Mountain Bike

Our steel and titanium mountain bike frames are built for control and durability on steep, technical terrain.

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Gravel Bike

Lightweight titanium and steel gravel frames deliver comfort and stability on mixed surfaces.

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Road Bike

Responsive Columbus tubing road frames offer speed and precision for performance-focused riders.

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FAQ

How do I choose which seatpost I need?

When choosing a bike seatpost, match the seatpost diameter to your seat tube size. Consider what kind of ride you’ll be doing:

Mountain bike riders often need rigid seatposts or dropper seatposts for technical terrain.
Gravel bike riders look for comfort, weight savings, and durability.
Road bike riders typically choose lightweight carbon fiber posts for smooth performance.

Also consider the saddle height, saddle rail compatibility, and the post’s overall length and adjustment range.

What seatpost diameter do I need?

Can I use a dropper post with a Thomson clamp?

Is a carbon seatpost worth it for a road bike?

How do I install a bike seatpost properly?

What’s the difference between a setback and a straight post?

Can a stuck seatpost be removed at home?

Are suspension seatposts better for comfort?

Will your seatposts fit carbon rails?

Hear From Our Riders

John

“In 1998 after bending 2 factory seatpost and destroying 1 Ritchey seatpost, I discovered the Thompson Elite. This seatpost has survived over 6,000 trail miles and over 200,000 feet of cumulative climbing. With 21 years of experience using the Thompson Elite, I have had zero seatpost failures. It is simply “The Best!”

Eliott Cundiff

“I love this seatpost. In terms of quality/weight for the price, it’s my opinion that there’s none better. I use it for mountain biking and it does the job well.”

Jason

“The best balance between strength and weight. I’ve had Thomson straight, set back, and even 2 of their droppers on my bikes the last 18 years. Road, mountain, and cross. The adjustability and quality are second to none. Hard to find even a carbon post that’s lighter.”

About Thomson

Thomson began in Macon, Georgia, as a precision aerospace machine shop. When founder Ronnie Thomson created the first Elite seatpost for his daughter, a competitive cyclist, it changed the industry. Today, Bike Thomson produces high-performance components built to meet real-world demands with the same aerospace quality. Every seatpost is machined in the USA, tested for strength and fatigue, and designed to deliver years of reliable riding.

@bikethomson