Crank Brothers are expanding their Highline series with the addition of the Highline XC/Gravel Dropper Seatpost to manage steep terrain and fast descents with greater control. The Highline XC/Gravel is equipped with a hydraulic IFP cartridge for smooth actuation and durability, and the two-bolt aluminum head fits most standard bikes with a diameter of 27. 2 millimeters. Jagwire's premium cables and housing are included to ensure your dropper post is ready to hit the trail after easy installation.