Hi… I’m John Umberger, founder of Serious About Sound and SAS Customs, Coopersburg, PA. I’ve been in the electronics industry for over 25 years and have been customizing and building “anything with wheels” for over 30 years. I have vast experience in troubleshooting complex problems, designing complete systems and providing excellent customer service. For years 765-401-5927


SAS Customs is proud to be able to offer Probox products to our customers and being the 1st approved dealer on the East Coast. With Probox we can fully customize your UTV in various options.  Want your ride to rock, we can hook you up with the top quality products at the best price. For 8656475719


The all-new Trail Grappler M/T blends some of the off-road performance of the Mud Grappler with the on-road comfort of the Terra Grappler to create a tire that is both aggressive and quiet. For off-road performance, the sidewall combines a 3-ply high turn-up construction with a thick rubber compound that cushions the tire and helps ……………….