High quality, lightweight, TIG welded titanium GR2 KG upper hoop weigh in at 0.8 pounds, saving 0.8 pounds from the steel upper hoop. Change out both nerf bars, upper/lower front bars and save almost 3.5 pounds. Standard length for MOST karts, same as KG, Birel / ART, OEM OTK (Tony, Kosmic, FA, Exprit, EOS, Redspeed, etc., 300mm from front face to end of flat mounting tab. If unsure about about bumper style, select "Drop-Down Push-Back Bumpers", works with both Standard and Drop-Down bumpers. .