Super X4 follows on the heels of the Super X3 Black Shadow. The Super X4 features functional controls are larger and easier to operate, a real benefit in damp weather and cold conditions; self adjusting active valve system; radius grip and textured gripping surfaces; reversible crossbolt safety and Invector-Plus choke system. Includes three Invector choke tubes- full, modified and improved cylinder and sling swivel studs.