Bike Brand: Spark Bike Model: 211 Disc Brake Frame Material: Reinforced Aluminum, Double Layer 700C Frame Size: 29 Bike Weight: 15Kg Front Fork: Hydraulic Suspension with Lock Color: Black & Blue / Black & Silver Gear Specifications: Gears: 8*3 SHIMANO Speed Rear Gear: SHIMANO-SIS Rear Sprocket: SUN RACE 32 Large Sprocket - 12 Small Sprocket Front Gear: SHIMANO - Tourney Brake Specifications: Brakes: Disc Brake Front and Rear Brakes: SHIMANO Chain: TG Disc Size: 160 Pedals: SHIMANO Crank and Pedal Arm: L made of Iron Coated with Plastic Tire and Rim Specifications: Tire: CST – Size (29*2.10) Rim: Aluminum - The bike has been used for only a month, I left it and no longer need it. It’s clean and has no issues, and I will give you a two-year warranty.