Every GT Air 2011 with Free Helmet from wiggle is fully safety checked and adjusted by our CyTech accredited mechanics before despatch. Frame: GT Dirt Design, steel tubing, downtube gusset Forks: GT Dirt/Street design, Hi-Ten steerer & blades Bars: GT Dirt/Street design – 7” rise Stem: GT Freestyle drop design, machined GT logo Cranks: Forged steel one piece – 170mm Sprocket: GT design – 33T Bottom Bracket: American Looseball Pedals: GT Jump design Freewheel: DNP 13T Chain: KMC Z510 Front Rim: Alex G303 pinned aluminium – 32H Rear Rim: Alex G303 pinned aluminium – 36H Tyres: Kenda K-Rad 2.125” front – Kenda Korolla 2.1” rear Front Hub: Steel body – 3/8” heat treated axle – 32 Hole Rear Hub: Steel body – 14mm Hi-carbon axle – 36 Hole Front Brake: alloy side-pull caliper Rear Brake: Rush 933S aluminium U-brake Brake Levers: Tektro 289A – full aluminium lever & clamp Grips: GT Wing Shroom design Headset: 1 1/8” threadless Saddle: GT Slim Mini street design – 8mm rails Seatpost: Steel, 25.4mm