This customizable mounting system is the lightweight version of the Sonic Wing.Customizable with three different angles when attaching to the seat postMounts cage in a forward lowest drag position to keep the bottles close to the seatOnly Compatible with the Cervelo P2Cs, P3Cs and P4CsIncludes: Carbon Sonic chassis, One Pair of X-Straps, Hardware, and InstructionsCarrier can also be inverted for an additional 15 positionsTotal Weight: 79gUse the included X-Straps to secure tubes or bags to the carrierMounting areas for up to two Gorilla Cages (Sold Separately)Use the Sonic-Nut (Sold Separately) to secure CO2 cartridgesCarrier fits on the seat post so it works with most any seats and installation is easyItem SpecificationsColorGloss Black