EXA Form Hydraulic Dropper Seat Post Cordless 100mm Stroke for MTB E-Bike Road Bike 30.9x383mm

• 3 diameters are available: 27.2mm, 30.9mm and 31.6mm. are all available for sale. It is very important to choose the correct diameter of the seat post according to the inner diameter of your bicycle frame. -
• Easy installation: no cables or housings, just carefully insert the purchased seat tube into the frame and then fix it. Important: The slot must be made up to the minimum insertion depth.
• Easy to use: simply pull the lever and sit down to adjust the seat height.
• Fully adjustable: the seat height can be adjusted throughout the ride.
• STRONG AND LIGHTWEIGHT: Hydraulic dropper seat post integrated into a 7075 aluminum tube.

Speed Up upgraded to hydraulic cartridge & can rebound by itself when press the lever in 2022. It can stop any height within the travel. Features Model: Manual Lever Control Advantage: No side-play, ultra-lightweight Type: Hydraulic cartridge, rebound up automaticly when press the lever. Travel: 100mm/120mm/125 mm/150 mm Diameter: 27.2mm, 30.9mm, 31.6mm. Seatpost with other diameters (eg: 28.6mm, 30.0mm, 30.4mm, 33.9mm) can be used as needed, & the corresponding adapter can be purchased separately.