The seatpost wedge (SPC-TTC-P3D) used for the Cervelo P2 and P3 triathlon and time trial bicycle uses a 4mm head bolt to keep your seatpost in place. Works with 2014-2019 generation Cervelo P2 and P3 bikes.

This original Cervelo part is no longer manufactured by Cervelo. Once this part is sold out, it will no longer be available.