The Speed M-Series XLT frames are the backbone of what may be one of the fastest BMX bike designs ever offered, but at around a half-pound lighter than the original M-Series frames. The weight loss comes from the tube set. Each tube was meticulously engineered to be lighter weight, yet retain strength and rigidity where needed. All-Pro size and larger Speed frames include chain tensioner blocks that make them compatible with standard as well as Sinz Elite 20-Mil iHub rear wheels.FEATURES:*Race-proven geometry*Hydro-formed, triple butted and swaged down tube*Unique hydro-formed top tube for Speedco*Integrated head tube (integrated headset required)*CNC machined dropouts*Low standover height*10/20 mm CNCmachined tensioners*Pro size and larger frames can use 20mm axles or 10mm standard (3/8″) axles; all others use 10mm standard (3/8″) onlySOLD ASFRAMEONLYSPECS:Mini – Expert XL: 22.2mm post, 1″ clampAll Pro Frames: 27.2mm, 1 1/4″ clampUSE: RaceMATERIAL: 6061 aluminumHEADSETSTYLE: IntegratedBRAKEMOUNTS: V-BrakeBB SHELL: Euro TT: Top Tube | CS: Chain Stay | SA: Seat Angle | HA: Head Angle