These handlebars are constructed with seamless CNC mandrel bent 0.120 wall 4130 chromoly tubes. These TBW w/ insert handlebars work with regular, cable-operated throttles, and if you remove the black end plug it will accept Harley’s Throttle-By-Wire control module. These bars have slots on each side for stock H-D hand controls and an exit slot in the center for internal wiring.