CooMeng EXA Form Upgraded Speed Up 27.2mm Cable-Less Hydraulic Dropper Seatpost, 120mm Travel Dropper Post for MTB/E-Bike/Road Bike-27.2mm*450mm

• 3 Diameters Are Available: 27.2mm, 30.9mm, 31.6mm are all available for sale, it is very important to choose the correct diameter of seatpost according to the inner diameter of your bike frame. If you are not sure how to choose, please feel free to contact us for help.
• Easy Installation: no cables or housing, just gently insert the purchased seat tube into the frame, and then lock it. IMPORTANT: Insertion is required to the minimum insertion depth scale.
• Simple Operation: Just pull the lever and sit to adjust seat height.
• Infinitely Adjustable: Seat height can be set anywhere in travel range.
• Durable and Lightweight: Hydraulic dropper integrated inside 7075 alloy 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.