2021 Surface 604 Bikes Quad S/M 48V 20AH
Exterior Colors:
- Year 2021
- Make Surface 604 Bikes
- Model Quad
2021 Surface 604 Bikes Quad S/M 48V 20AH
2021 Surface 604 Bikes Quad S/M 48V 20AH
Features may include:
WHISPER SMOOTH TORQUE SENSING PEDAL ASSIST
Because an electric bike is only as good as it’s power distribution.Quad incredibly smooth torque sensor knows how hard you’re pedalling down to the microsecond and matches it with aproportionate power.
Gone are the days of simple cadence sensors!
Custom drop out design delivers whisper smooth torque sensor sensation at any assist level.
In fact, you’ll swear it’s as so smooth as a mid-drive motor.
Dimensions
Dimensions
Seat Post Diameter: 30.4mm | Head Tube Angle: 70mm | Seat Tube Angle: 74mm
Length
Top Tube: 615mm | Head Tube: 175mm | Seat Tube: 444.5 (17.5")mm | Chainstay: 450mm
Height
Standover: Small-Medium: 28.5” (724mm) / Medium-Large: 30” (762mm)
Wheelbase
1146mm
Motor
Motor Type
eMTB Specific 500W (Peaks At 750W) Bafang Geared Hub Brushless Motor
Motor Torque
65Nm of Torque
Motor Controller
SURFACE604 Designed 12 MOS 48V 500W 25Ah, Smart
Harness
Upgrade Motor Wire: 30Ah, can handle up to 120C current
Performance
Top Speed
20mph (32kmh)*, Comes as Class 2 | (Unlocked) 30mph (48kmh), as Class 3
Battery
Battery
Included: 48V 14Ah / 672Wh | Samsung lithium-ion 18650 cells | Upgrade option: 48V 20Ah / 960Wh | Samsung lithium-ion 21700 cells
Battery Capacity, Maximum
Up to 45mi (72km) with a 48V14Ah Battery / Up to 65mi (105km) with a 48V20Ah Battery
Battery Charging Time
3-4 Hours for a Full Charge from Empty
Drivetrain
Drivetrain
Derailleur: SRAM X5 9-Speed 1-Piece forged CNC with 2 sealed bearings | Bottom Bracket: Samox sealed bottom bracket
Drive Control
Drop Out Torque Sensing Pedal Assist with a Throttle
Sprockets, Rear
Cassette: SRAM 12-34T
Throttle
Thumb Push Activated Throttle
Fork
SR SUNTOUR XCM 32. 29er, 100mm with Axle Thru Hub
Chassis
Chain Type
KMC 9-Speed, Gold Color
Frame Type
Tapered Headtube, Custom Reinforced Battery Mounts, Internal Cable Routing, Post Mount Brakes | Material: 6061 Aluminum Alloy
Handlebars
Promax Aluminum, 60mm Rise With 9° Backsweep and 720mm Wide
Handlebar Grips
Full Length 145mm, Brown Color
Pedals
Wellgo Platform, With Die Casting Body, Gold Color
Brakes
Brake System Type
TEKTRO Dorado eMTB Specific Hydraulic Disc, Quad Piston, 180mm Rotor with Motor Inhibitors | Rotors Front: 180mm x 2.34mm thick | Rotors Rear: 180mm x 2.34mm thick
Bicycle Crank
SAMOX 38T Front Sprocket, 170mm Crank Arms
Wheels & Tires
Wheels
Rims: Aluminum Alloy Double Wall Rim, 27.5?x13Gx36H
Front Wheel
Maxxis Rekon+ 27.5” x 2.8” Skinwall tires (3C, Exo casing tech)
Rear Wheel
Maxxis Rekon+ 27.5” x 2.8” Skinwall tires (3C, Exo casing tech)
Lights and Safety
Lighting
Büchel Headlight, Pre-Wired To Connect Rear Stop Light
Features
Features
Display: SURFACE604 Color LCD Display with Micro USB Jack Bigger display: 3.5" for 2021 vs. 3.2" for 2020 | Stem: eMTB specific Ergotec Bass 31.8mm | Head Set: SAMOX Tapered with Sealed Bearings 1 1/8″- 1 1/2″ | Kickstand: Heavy duty aluminum
Hub Type
Front: 1-Piece Forged CNC With 2 Sealed Bearings, Cro-Mo Axle And Alloy QR