Regular price $329.99 Save 0%

Zero Interest or $28/mo if paid in full within 12 months.


Designed to provide you with a better sports’ bicycle experience the PRO Tharsis 3Five Dropper Post is a dropper post for weight conscious cross-country or endurance mountain bikers. It features 100-millimetres of infinite-travel, internal cable routing and is available in three diameters; 27.2-, 30.9- and 31.6-millimetres. The 27.2-millimetre 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 405-grams. The 30.9- and 31.6-millimetre versions likewise boast a 3D forged construction; but with AL7075 lowers and an AL7050 shaft. The Tharsis 3Five Dropper has a new 2-bolt saddle clamp.


  • Lightweight cross-country and endurance mountain biking dropper seatpost
  • Featuring 100mm of infinite-travel
  • 3D forged alloy construction
  • Titanium bolts
  • New collar
  • Lighter cartridge
  • Oval shaft inside shape
  • Internal cable routing
  • Weight: from 417gr


  • Diameter: 31.6 mm
  • Length: 400 mm
  • Travel: 100 mm
  • Setback: 0 mm
  • Actuation: mechanical handlebar remote
  • Cable Routing: internal
  • Clamp: 2-bolt
  • Compatible Saddle Rails: 7 x 7 mm (standard)
  • Material: Aluminium (shaft), titanium (screws)