The Cobalt line combines proven geometry and dialled components giving you the best start out of the gate during the first days racing. The Cobalt Expert steps up to a 19.5" top tube, a longer 50mm reach cobalt stem, a slim radio pivotal seat and wider 1 3/8” Arisun XLR8 tyres. All Cobalt bikes feature fully sealed front hubs and integrated headsets, making them simply unstoppale when comparing price to spec. ###section### Product Specs FRAME MATERIAL: 6061 T6 alloy WHEEL SIZE: 20" TOP TUBE LENGTH: 19.5" CHAIN STAY LENGTH: 13.6" HEAD TUBE ANGLE: 73° SEAT TUBE ANGLE: 71° FORKS: cr-mo, 1-1/8″ butted steerer tube, hi-ten fork legs, 23mm offset BARS: 4130 seamless cr-mo STEM: Radio, Cobalt-toploader, ext. 50mm, alloy HEADSET: FSA, No.28, integrated headset, sealed, 1-1/8″ BRAKE MOUNTS: Welded BRAKES: PROMAX “MV-87” alloy brake rear FRONT HUB: RADIO “Cobalt” alloy CNC hub, fully sealed, 3/8″s, 28h, crmo axle FRONT RIM: Radio, A-M5, double wall, 28H, alloy REAR HUB: RADIO “Cobalt” alloy CNC hub, fully sealed, 3/8″s, crmo axle, 28h, flip flop REAR RIM: Radio, A-M5, double wall, 28H, alloy TYRES: Arisun, XLR8, 20″x 1-3/8″ SPROCKET: CRANKS: RADIO “Cobalt” forged alloy 3pc crank, 165mm long BB: Radio, BSA square taper, sealed PEDALS: Radio, Cobalt Pro, alloy SEAT: Radio Cobalt Pro, combo seat GEARING: 42/16 WEIGHT: 8.95kg/ 19.73lbs ###section### Product Highlights Expert sized BMX bike. Designed for the needs of racers who are 5ft" - 5ft 4" (150cm - 165cm) A BMX race specific bike great for those riders just getting started Strong and lightweight construction Sealed bearings throughout Integrated headset ###shogun-image-section###