racing bicycle rear wheel closeup view. gearshift, gearwheel and black spokes

alloy background bicycle bike black brake brand chain chainring cleaning close-up closeup color component cycle cycling dark design detail disc disk engineering equipment exercise famous fast fine fix fork frame gear gearing gearshift gearwheel high hub italian machine macro maintenance mechanic mechanical metal metallic modern narrow racing rear recreation repair ring service shop speed spokes sport sports teal technology teeth transport transportation view wheel