whynotfab
+1y
Most people who are gonna be running extreme PSI and hopping, for competitions, etc. would use Dual Port HS series.. In those cases, they'd usually have 2 fills mounted directly on the bag.. for more speed. I've also seen dual ports with the fill right on one port, and the dump on the other. The HS series bag is also rated for a higher PSI.. kind of goes with the whole hopping thing. If you have Viair compressors and want to keep the warranty, you wouldn't run your system that high anyway.. so you could save money by getting RS or ES series single ports, keep your warranties and still have a quick system.