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Dropper Seatpost

3 out of 5 stars
1 Review

Out of Stock

Don't worry though, we have a lot more Mountain Bike Dropper Seatposts in stock than that.

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Why We Like The Dropper Seatpost

While a foray into hydraulic systems may seem a stretch for Thomson, which has always made static parts, keep in mind the manufacturer is first and foremost an aerospace contractor. That means that, while it would seem that Thomson is starting behind companies like Fox and RockShox, who have been manufacturing hydraulic parts for years, Thomson is actually ahead of the learning curve—and the Thomson Dropper Post makes this point obvious.

The only part that the Dropper shares with its siblings is the much-loved saddle clamp. The post uses an oil cartridge to control height and a nitrogen shock to lift the mechanism. Because oil doesn’t compress, the post stays put wherever your posterior leaves it, for an infinite range of adjustment. The last 15mm of travel (at the top) is damped, so your body isn't on the receiving end of a hard smack.


  • High-end dropper post from the fine craftsmen at Thomson
  • Oil cartridge
  • Nitrogen shock
  • Infinite adjustability
  • Top 15mm of travel is damped
  • Handlebar remote and under-seat lever included
  • Item #THP0020
[seatpost] aluminum
30.9mm, 31.6mm
Claimed Weight
[31.6x375mm/100mm] 1lb 7oz (651g)
mountain biking
Manufacturer Warranty
2 years