Ive also searched for just aftermarket charge pipes for our car and come up empty. DDM works offers hard charge pipes for the sonics, but our piping is different as our intercooler is mounted in a different location. Ive also tried ZZP and EndTank, no one seems to offer just the pipes. You could have them custom fabbed or make your own kit from universal pieces but I like as few seams and connections as possible which isnt what you end up with when going universal.
Ive not seen just the charge pipes from CX racing. They offer the intake by itself but their intercooler kit is front mount whereas the stock intercooler sits between the radiator and heater core. they offer universal ones and silicone hose bits but then youre still looking at fabbing and a lot of connections that can fail. They may be willing to sell just the charge pipes that come with the Kit however Im not sure they would work given the difference in location versus stock.