cp-e™ METHCharge™ Ford Focus ST Charge Pipe – Cold SideSetting out to replace the stock full silicone cold side charge pipe, cp e has not only managed to design an upgrade solution with an aluminum pipe, but has designed a solution with a 2. 75 diameter pipe! Pushing the space to the max, cp e wanted to bring the community the last cold side pipe they will need through all of their modifications.