Bike Brand: Spark Bike Model: 211 Disc Brake Frame Material: Aluminum reinforced with two layers 700C Frame Size: 29 Bike Weight: 15Kg Front Fork: Hydraulic shock absorber with lock Color: Black and Blue / Black and Silver Gear Specifications: Gear: 8*3 speeds SHIMANO Rear Gear: SHIMANO-SIS Rear Sprocket: SUN RACE 32 large teeth - 12 small teeth Front Gear: SHIMANO - Tourney Brake Specifications: Brakes: Disc Brake Front and Rear Brakes: SHIMANO Chain: TG Disc: Size 160 Pedals: SHIMANO Crankset: L made of plastic-coated iron Tire and Rim Specifications: Tire: CST - Size (29*2.10) Aluminum Rim The bike was used for only one month and then I stopped using it. It is clean and has no issues. I will give you the two-year warranty.