URBAN SERIES: Durable steel frames that feature Edge 2 shaping processes yield bikes that are designed to maneuver the challenges of every day city riding. Disc brakes and locking quick release axles are among the features that ensure that these bikes can be ridden in all weather conditions and environments. Our urban line offers models with either 26" or 29" wheels.Model Name Muirwoods Model Category Street Model Series Urban Frame 4130 Cromoly, Double Butted Edge Steel Tubeset with Butted E4 Anti-Flex Seat and Chain Stays Front Suspension Cromoly Rigid 1 1/8" Shift Lever Shimano Acera Rapid Fire Plus, 8 Speed Derailleur Front Shimano Acera Derailleur Rear Shimano Deore Brakes Front Forged Alloy Linear Pull Brakes Rear Forged Alloy Linear Pull Brake Levers Forged Alloy 3 Finger Pedals Alloy Platform Crankset Suntour XCT, 48/38/28 with Chain Guard Bottom Bracket Sealed Cartridge Chain HG40 Cassette Shimano HG31, 11-32, 8 Speed Hub Rear Alloy Double Sealed, 32 Hole Hub Front Alloy Double Sealed, 32 Hole with QR Rims Alex CA-20, Double Wall, 32 Hole with CNC Side Walls Spokes Nipples WTB 14 Gauge Black Stainless Tires CST Urban, 26" x 1.4" Saddle WTB Vigo Comp Seatpost Alloy Micro Adjust, 27.2mm Stem Marin OS Alloy Threadless with 31.8mm Bar Clamp Handlebar Double Butted 6061 Alloy, OS-31.8mm, 25.4mm Rise Grips WTB Street Smart with Drop Guard End Plugs Headset FSA, 1 1/8", Threadless