21 speeds original Shimano gears. Size: 26 inches. Frame: 17-inch steel. Materials: Steel. Number of speeds: 21 speeds (7 rear speeds and 3 front speeds). Gears are first-grade Shimano. Shimano (500-7, Front Derailleur TZ30 & Rear Derailleur TZ 50 Suspension: Front and rear suspension Brake type: Front and rear discs Pedal type: Aluminum (plastic pedals). Product weight: 22 kg I bought the bike for 700 and used it for one day. I'm selling it because I got an electric scooter. It comes with all its accessories. I'm asking for 600 for a quick sale, and I won't disappoint the serious buyer, God willing.