The bontrager drop line 150mm dropper seatpost bontrager39s drop line seatpost brings bontrager39s legendary durability and value to the rider looking to challenge themselves with steeper pitches and bigger drops bontrager drop line 150mm dropper seatpost features remote cable actuation with an ergonomically designed under bar lever the air sprung hydraulic locking cartridge offers infinite adjustability within dropping range a keyed chassis prevents rotation for a