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ThomsonMasterpiece Setback Seatpost

Temporarily Out Of Stock

Item # THP0003

Don't get too bummed. This item is on the way and will be available for purchase as soon as it rolls into the warehouse.

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Masterpiece Setback Seatpost

All of the virtues of the Elite, but every surface gets even greater machining to shave away additional grams. 158g with all of the outstanding strength and security of aluminum. Comes with a velvety bag suitable for a slender bottle of booze. Comes in 27.2, 30.9 or 31.6mm diameters in various lengths. 16mm of setback.

  • Infinite tilt adjustment from minus 5 degrees to plus 29 degrees
  • Every component is 100% American made
  • Swivel nuts rest below clamps for a super-low profile
  • Impact-absorbing clamps, head, and assembly disperse vibration so you don’t destroy your seat rails

  • Aluminum
  • -5 degrees to +29 degrees tilt
  • Made in USA
  • Impact-absorbing clamps, head, and assembly

Tech Specs
Material7000-series aluminum
Diameter27.2 mm, 30.9 mm, 31.6 mm
Length240 mm, 330 mm, 350 mm
Offset16 mm
Recommended Usemountain, road
Manufacturer Warranty3 years

Claimed Weight

Claimed weights are provided by the vendor.

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Actual weights are measured in-house by the Competitive Cyclist team.

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What do you think about this product?


>Rating: 5

Precision and Beauty

I've put it through the wringer
True to size
Size Bought
27.2 x 330cm
6` 0"
235 lbs

Choosing a seatpost should not be an adventure. After all they do just one simple thing...right? Well after my Deda Superleggera post broke, I found myself on a mission to replace it only to discover how many really poor designs there are. As a larger heavy rider I needed a clamping design that secured the rails under and over as opposed to a side clamping design. I also needed setback. I bought a 3T, Zipp Service Course, a Fizik R1 and then finally the Thomson Masterpiece in my quest for saddle security. The three previous choices were well made but the ability to fine tune the tilt is poor and all three of them creaked under my 235lb butt. The Thomson is really well designed and beautifully made. On the road adjustments with a functional tilt gauge on the side of the clamp really makes this post stand out above the others. The CNC machining is a feast for the eyes and it does not creak. Yay!. It does that one simple thing and adds a touch of quality and elegance to my already over the top bike. I ultimately changed out my stem for a Thomson Elite X4 to match. Mission accomplished.


Is this compatible with a Bontrager saddle with 7x10 carbon rails?

>Rating: 5

Perfect Post

I've put it through the wringer

I have put 1000+ miles on this post, and never had an issue. Adjustments to seat angle are super easy, post looks great and provides a good amount of setback for taller / leggy riders. 10/10 would recommend.

>Rating: 5

Rad Post

I've put it through the wringer

This post is the bomb. Super light weight and has the brand behind it. You can't beat a Thomson Masterpiece post if you're trying to make your bike a one of a kind. People will become jealous and point it out.

>Rating: 4


Chasing grams, I had a famous maker carbon post on this rig and broke the rules attaching a seatpack for bikepacking. Short story—carbon post failed—I heard it crack and then examined it and broke it off by hand. Enter, the tried and trusted Thomson. Not the lightest, certainly not the heaviest. You know what they say—Strong, Light weight, Low Price; pick two… This is strong and pretty light. I’ve got Thomson posts on some of my other bikes (road and mountain)—forgot how great they are—probably because they just work. Easy adjustment for the seat to dial it in perfect. Then set it and forget it…holds the rails of the seat like a vise. No worries about shards of carbon piercing the nether regions with a Thomson post.


Masterpiece 31.6

Beautiful and light.