6KU Bikes Fixed Gear Single Speed Urban Fixie Road Bike (Shelby-4 (Gloss Black/Blue), 58cm / X-Large) Frame: High tensile steel fully tig-welded Wheels: 45mm Deep V alloy rim Hubs: 32H Quando flip-flop Hub Fork: 1-1/8 high tensile steel Headset: Neco threadless 1-1/8 Handlebar: 22.2cm alloy riser bar Chainring Crank: Alloy 44T*165mm Brakes: Front Radius Forged Alloy Bottom Bracket: Neco Sealed cartridge 68mm x 103mm Tires: 700 x 25C Kenda Pedals: BMX Platform Seatpost: 25.4mm Forged Alloy Saddle: Synthetic Leather Gear Ratio: 44/16 Gear Inches: 74.25