Tributary is Salsa's electric rugged-road adventure bike. It's built to devour big, burly dirt routes. Tributary's well-balanced gravel geometry and massive tire clearance mean total comfort and control on sketchy surfaces - even at ebike speeds. The BOSCH Performance Line Speed motor empowers riders to tackle demanding bikepacking routes, explore vast networks of forest roads, or add miles to any adventure. Pair all that with Salsa's on-bike cargo features, and Tributary is ready to take riders from their front door to far-out.Meets UL 2849, and UL 2271 certification6061-T6 aluminum frameTributary Carbon forkBOSCH Performance Line Speed class 3 mid-drive motor with smart system28 mph or 45 km/h max assist85 Nm max torque625 watt-hour (Wh) Bosch PowerTube internal batteryCompatible with Bosch range extender battery (sold separately)Class 5 VRS Internal dropper post routingInternal cable routing with port for integrated lighting system148 x 12 Boost thru-axle rearSRAM UDH compatibleFender, rack, and Three Pack mountsCompatible with direct-mount frame bagsTwo bottle mounts inside main triangle on all sizesAccommodates up to 29 x 3.0" front, 2.6" rear tiresAbrasion-resistant wear protection plates on inside of fork legsItem SpecificationsAssist Levels4Assist Speed (Mph)28Battery Power (Ah)16.7Battery Power (V)36Battery Power (Wh)625BatteryLi-IonBrake TypeDiscCharge Time (h)5.4Charger IncludedYesColorTealDefined ColorBlueDrive TypeMid-DriveEbike Class3Fork MaterialCarbonFork TypeRigidFrame MaterialAluminumFrame TypeRigidFront Axle15mm Thru x 110mmLights IncludedNoMax Motor Assist (Percent)340Mfg SizeLargeMotor Torque (Nm)85PlatformTributaryRange Estimate (Mi)72Rear Axle12mm Thru x 148mmRemovable BatteryRemovable for ServiceThrottleNoTT (Effective)610Walk AssistYesWheel Size29" Salsa Tributary GRX 600 Ebike - Teal Ebike UPC: 657993346891