700c Road Bike Bicycles Men Adult 21-Speed Double Disc Brake Lightweight High Carbon Steel Frame Racing Bikes

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【STURDY FRAME】 Advanced aviation grade aluminum alloy frame with endurance geometry for durability and all day riding comfort. Advanced integrated customized rear hook claw ,imitated carbon fiber brake inner wiring, S/T:520mm.
【UNIQUE DESIGN】KENDA 700*28CButyl Rubber, F/V 48mm, power 21 speed grip shifter. Recommended for rider’s height 5’3″-6’0″. Max weight up to 330lbs.
【QUICK ADJUSTMENT】 Allow you to switch through the gears very quickly with your finger tips, so you can quickly select a gear for every terrain.
【PREMIUM PERFORMANCE】Maximizes the daily riding enjoyment and provides safe and fast user experience. High-performance 700C tires can solve multiple challenges and problems of rigorous street racing.
【EASY TO ASSEMBLE】This bicycle arrives with 85% assembled. You just need to install the front wheel, handlebar, pedals, seat and air up the tires. It was very easy to assemble it in 15-20 minutes.