The PRO Tharsis 100mm Dropper Seatpost is a lightweight, infinite long-travel dropper seatpost
The PRO Tharsis 100mm Dropper Seatpost is a lightweight, infinite long-travel dropper seatpost. Available in a 100mm travel option, with internal cable routing, it features a full alloy cartridge and an alloy body to ensure it is lightweight and robust. The 27.2mm version boasts a 3D forged construction with an AL6061 alloy lower and an AL7050 alloy shaft, with titanium bolts; which ensures that it tips the scales at just 405g. The 30.9 and 31.6mm versions also pack a 3D forged construction; but with AL7075 lowers and an AL7050 shaft. Weight reductions are further enhanced by the use of an oval stanchion shape and a two-bolt style, 3D forged alloy head with titanium hardware. The new 2-bolt saddle clamp saves 45g while the oval shaft, improved collar design and optimized lower tube saves a further 25g. The Tharsis Dropper Seatpost 100mm is available in 27.2, 30.9 and 31.6 diameters.
Features:
PRO is one of the most dynamic brands in the market, offering everything from cockpits to saddles, droppers or tools.

Over the last decade, the Shimano-owned PRO brand has grown considerably into a major player in the bicycle accessory market. PRO handlebars, stems, saddles, seatposts and cycling accessories are high quality and innovative. From the lightweight VIBE road range, to the Tharsis 3FIVE mountain bike standard and the Discover gravel range, PRO have a finishing kit to suit the way you ride. PRO also produce workshop quality tools, bike bag and on-bike storage.

Each PRO handlebar, stem and seatpost product boasts a Lifetime Warranty which means that riders know they can trust PRO. With a 30-day money back guarantee too on all PRO saddles, buyers really have the confidence to find the right fit and feel.
Over the years PRO has supported many World Tour road teams and World Cup mountain bike teams and their products have been put through their paces by the likes of Remco Evenpoel, Laurens Ten Dam, Scotty Laughland and Matt Walker. If it’s good enough for those guys, you know it’s good.
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