XL Advantage Style Leatherneck Fiberglass Kart Seat for PowerScale up your supremacy using the Leatherneck Fiberglass Seat, Advantage style XL. At 14. 5 inches narrowest, it accommodates robust physiques, fiberglass backbone providing ironclad hold that turns body English into banking mastery. No sagging herejust pure, unfiltered connection to your machine. XL sizing empowers heavier hitters to wield weight as a weapon, shifting dynamically for inside moves that steal positions. The stackable note