Wheel diameter: 18". Frame Top Tube: 18" (45.7cm). Bar design: Two-piece. Bar height: 7.25" (18.4cm). Hub: Cassette, Semi-sealed bearings. Frame standover height: 7.4'' (18.8cm). Weight: 10.73kg. Frame material: 1020 hi-ten. Seat clamp: Integrated. Seat: Combo. Seatpost Length: 160mm. Tire width: 2.3". Pegs: Not included. Axle diameter: 10mm, 12mm. Wheel offset: 32mm. Stem type/Length: 40mm, Top load. Stem diameter: 22.2mm. Headset type: Non-integrated. Headtube angle: 74°. BMX Brake Included: U-brake (Rear). Chainstay length (Center): 13.25'' (33.7cm). Gear ratio: 25/9. Crank Length/Type: 152mm, Three-piece. Pedal axle diameter: 9/16". Sprocket mounting: Bolt Drive. Driver side: Right. Crank material: Chromoly Steel. Bottom Bracket: American (AMER), Open bearing Pedal material: Plastic. Number of spokes: 36. Chain type: Single speed. Assembly: Partly assembled. Recommended from: 8 years.