not sure how much rc work they have done, but there is Orient Express located on Long Island and they are very competent engine builders/exhaust etc... you can check out their website. there is also a guy who is up near albany who is a really good builder (im gonna try to search and find out his name).
A forum community dedicated to Motorcycle owners and enthusiasts. Come join the discussion about performance, reviews, modifications, classifieds, maintenance, troubleshooting, and more! Open to Ducati, Honda, Suzuki, Kawasaki, Yamaha, MV Agusta, and any other make with the need for speed!