A whole new sport calls for a whole new bike. The full-carbon-fiber Oso features a dw-link rear suspension that optimizes efficiency and control, pairing 155mm of rear travel with 170mm up front. Powered by a Bosch Performance Line CX motor and a 750 Wh battery, the Oso delivers exceptional performance on any terrain--making every ride feel like it's Downhill Both Ways(TM). Key Features: - 170mm Front Travel - 155 Rear Travel - Bosch CX Motor - 750 Wh Battery, UL certified - Dw-link Suspension - Air and Coil Compatible - SRAM GX Transmission drivetrain - XT brakes with 220mm rotors - Size Specific Chainstays and Wheel Size - Lifetime Frame and Rim Warranty Wheel size: Sizes X-Small - Small: 27.5-inch Sizes Medium - X-Large: 29-inch