Shuttle High Speed

BR Shuttle High Speed END-HS101............................$8.00 Kinsler IRL P recision H igh Speed Made In The USA!! ONE OF THE best kept tune up secrets to be discovered in a long time. This regulating Slide Valve keeps your Fuel Curve even with the Engine RPM. You set it like a normal High Speed but instead of a Popet inside it has a slide with progressive Bypass Holes. As the pump pressure comes up it unloads just the right amount of Fuel keeping your Fuel Curve clean! We’ve seen peak power numbers increase by 14 HP. Setting can be changed with normal High Speed Shims. Karl Kinser won 2 championships using one of these, and many others have em too!