Hi KB, I have a Yellow SERG out here in CA. The SERG a/c is a high flow with about the same capacity as other, usually round HD high flows. See HD #29260-08 for example. There are a few guys who have gone with the "heavy breather" HD # 29253-08. I did and it helps. Have not seen an aftermarket specific for it but there should be some out there. Kuryakyn has the "hypercharger" but I'm not sure you'd want that on a CVO bike. They also have a "Corsair" K #9864. That might be OK but I think the HD heavy breather looks better. The advantage of the heavy breather is that is incorporates a plenum which directs the air flow. It also requires a recalibration of the ECM and if you're going to do that, the SERT (or similar upgrade) seems to be the way to go. Pic below is of the stock a/c (which is now on my buddy's SEEG.)