incredibly light: 5.6 kg Q-Axle hub - large 24 mm diameter steel spindle, maximum drilled for minimum weight, aluminum body QU-AX Zero Q-Axle cranks, 137 mm, black anodized Disc brake Shimano (Deore level) for perfect braking feel with one finger, two 160 mm discs with aluminum rotor QX Eleven saddle, designed and refined by Kris Holm Q-series #rgb stainless steel clamping base with filigree clamping double bolt, #rgb laser logo, only 29g Wide #rgb rim, 27.5", 6061 aluminum alloy, 5 double wall chambers, 45mm outer width, 38.6mm inner width, QX laser logo on 67x584 flange mm (27.5"x2.8") Fast Bearing WTB Ranger QX Series Black Plastic Pedal #rgb frames have a wide 34.9mm head tube for thin wall thicknesses with maximum stiffness.They are made 6061-T6 aircraft-grade aluminum alloy An anodized frame is lighter than a painted frame - and finally, the threads in the frame save the weight of the steel nuts you would otherwise need. All this makes the QX #rgb frame weigh only 533g (78g shells, 22g screws). The #rgb frame has a unicrown shape to protect your legs against any impact. #rgb Logos are laser etched, huge QX logos are decals - definitely one of the lightest frames on the market. IS brake pad (for 160mm discs), cable gauges on frame Tire clearance: height from axle center to bottom end of frame-crown: 378mm, width at tires: 94mm #rgb Seatpost made of 7050 aluminum with stylish wide head, huge 31.6 mm diameter for thin wall thickness and only 216 g in 350 mm weight: approx. 5.6 kg Minimum inseam length: approx. 76.5cm (with 145mm cranks)