Cervelo Seatpost Head For SP18/19/20 - SPH-SP18/19/20 Tubeless Compatible Extensions: ASC 43 and

Compatible Extensions: ASC 43 and 52 Series (Not compatible with Pro Series Extensions)

The more aerodynamic tubes feature a D-shaped or flatback seattube

Inner Diameter: 19

With stunning acceleration

Cervelo Seatpost Head For SP18/19/20 - SPH-SP18/19/20 Tubeless Compatible Extensions: ASC 43 andThe Cervelo SP18 19 20 series carbon seatposts feature an FSA style saddle clamp design with a single lower plate and dual upper clamp plate system. This vertical clamp head design offers easy angle adjustment and has long hardware to work safely with both 7x7mm round and 7x9mm oval saddle rails. The clamp pieces of the assembly are alloy, finished in black. Stainless steel and alloy hardware, as well as all required parts to work from a bare carbon