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Thomson Masterpiece C Seatpost
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Thomson Masterpiece C Seatpost


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Mfg PartNum:
MSRP: $291.95
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Thomson Masterpiece C Seatpost, a Carbon Fiber Dream Come True

The Thomson Masterpiece C carbon seatpost represents an evolution of the groundbreaking Elite collection you've come to love and trust.

Titanium hardware, precision adjustability, proven performance. The Masterpiece C pairs exquisitely with Thomson's Elite series stems, seatpost collars and handlebars for complete cockpit collection.

Thomson designs and materials go through extensive lifespan and durability testing, ensuring every production lot of seat posts meets Thomson's aerospace-grade standards.


  • Features Ti hardware and alloy clamp for lightweight functionality
  • Infinite tilt adjustment from - 5 and + 29 degrees
  • 350mm seatpost length
  • 30.9 and 31.6mm diameter options available
  • Weight: 190g (30.8mm)

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

The product weight specified is an approximate weight based on the manufacturer's specifications (if available) or our measurement of one or two examples. For most products, the weight will typically vary by 5% to 10%.


Seatpost Type: Rigid 

Setback: 0 degrees

27.2 x 350mm - 0mm Offset

Weight: 179 grams

Seatpost Clamp: 27.2 mm

Mfg PartNum: SP-C101 

30.9 x 350mm - 0mm Offset

Weight: 190 grams

Mfg PartNum: SP-C103 

Seatpost Clamp: 30.9 mm

31.6 x 350mm - 0mm Offset

Weight: 191 grams

Seatpost Clamp: 31.6 mm

Mfg PartNum: SP-C102 


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1 stars
Reviewed 7/31/2022
by Anonymous
Cycling Enthusiast
Value Rating
Overall Rating
Light and comfortable

Purchased this to replace the stock carbon seatpost on my Canyon Ultimate. The seatpost came in 19g lighter than the listed weight (160g on my scale vs 179g on Thomson's website) and fit into my seat tube as expected. The zero setback is still comfortable and there hasn't been any slipping or loosening of the saddle rail bolts in the first 300km.

The biggest complaint is that there's no markers for seatpost height, which would have made adjustments a little easier, but that's mostly a quality of life gripe.

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Reviewed 2/5/2022
by PJF
Cycling Enthusiast
Overall Rating
The best seatpost for tilt adjustment

Using Selle SMP saddles, which are very sensitive to tilt angle. The Thomson head makes adjustment extremely easy yet it stays put exactly where you set it. Also a very light seatpost, and nicely made. I hear that a (16mm?) setback version will come out in the summer of 2022.

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Mechanic's Corner

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A guide to picking the best seat post for your riding style.
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