Surface 604 500W Sunny Day Cruising Electric Bike

Surface 604SKU: EB-SUNNY-12

FREE SHIPPING to Continental US

Battery: 12ah
Sale price$2,199

Motor Size:

500 Watt Bafang Brushless


48V Samsung Lithium Ion

Drive Mode:

Class II: Throttle Pedal Assist

Frame Type:

6061 Aluminum Alloy Step Over

Wheel Size:

27.5" x 2.4"

Motor Position:

Rear Hub

Financing Available

Pay in 4 interest-free payments.

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The Surface 604 500W Sunny Day Cruising Electric Bike is an affordably priced hardtail cross-country style electric bike with a 9-speed SRAM 11-34-tooth cassette, plus-sized tires, a higher top speed of 28 mph, a super-responsive torque and cadence sensing bottom bracket, a quiet motor, and a trigger throttle that overrides assist for full power.

Powerful Bafang Geared Hub Brushless 500W Motor

The Surface 604 500W Sunny Day Cruising Electric Bike is equipped with a very potent 500W hub motor (peaks at 750W). With a torque sensor and throttle on demand, the Day Cruising is ideal for hill climbers who might use a little additional help. With a 500W, 48V electric motor particularly developed for speed. You will experience the rush of reliable, vibration-free power distribution at faster speeds.

Whisper Smooth Torque Sensing Pedal Assist

Because the power distribution of an electric bike is the single most important factor in determining its overall quality, the Big Sky Cruising Electric Bike's torque sensor of this XS electric bike is incredibly smooth and can measure the force with which you are pedaling down to the microsecond. It then matches that force with the appropriate amount of power. Those days of using a basic cadence sensor are long gone!

Long Range Lithium-ion 18650 Cells Battery

The Surface 604 500W Sunny Day Cruising Electric Bike offers three high-capacity battery options with proprietary designs.

A Cockpit With A New Design

Now with an extra-large color LCD display such as the SURFACE604 Color LCD Display with Micro USB Jack and a larger display: 3.5 inches for the year 2021, compared to 3.2 inches for the year 2020. to display all the critical information and to offer an extra layer of protection. You may also give the bike a passcode, and much like your phone, it won't start unless you enter the correct passcode.


MOTOR: 500W (Peaks At 750W) Bafang Geared Hub Brushless Motor
DRIVE MODE: Drop Out Torque Sensing Pedal Assist with a Throttle
TORQUE: 65Nm of Torque
THROTTLE: Thumb Push Activated Throttle
CONTROLLER: SURFACE604 Designed 12 MOS 48V 500W 25Ah, Smart Controller
BATTERY: Included: 48V
BATTERY CHARGE TIME: 3-4 Hours for a Full Charge from Empty
DISPLAY TYPE: SURFACE604 Color LCD Display with USB Jack
LIGHTS: Pre-wired for front and rear light (purchased separetly)
FORK: Rigid Cruiser Front Fork
MOTOR WIRE HARNESS: 30Ah, can handle up to 120C current
BRAKES: TEKTRO Auriga E350 Hydraulic Disc with Motor Inhibitors and 180mm Rotors
CRANK SET: SAMOX 42T Front Sprocket
ROTORS: 180mm Front/Rear x 2.34mm Thick
BOTTOM BRACKET: SAMOX Sealed Bottom Bracket
FRAME TYPE: Tapered Headtube, Custom Reinforced Battery Mounts
FRAME MATERIAL: 6061 Aluminum Alloy
STEM: ZOOM Aluminum
HANDLEBAR: Cruiser style, 700mm, 45 degree backsweep, 30mm rise
PEDALS: WELLGO Platform, with Die Casting Body
CHAIN: KMC 9-Speed
SADDLE: Selle Royal Gipsy Elastomer Ergonomic Gel Saddle
WHEELS/TIRE: Custom S604 Innova Tires 27.5" x 2.4"with Reflective Sidewall
RIMS: Aluminum Alloy Double Wall Rim, 27.5”x13Gx36H
FRONT HUBS: Surface604 Aluminum
KICKSTAND: Adjustable Heavy-Duty Aluminum
STANDOVER HEIGHT: Small-Medium: 27” (686mm)
RECOMMENDED RIDER HEIGHT: For Riders: 5’2” - 6’1”Frame Sizes: S/M - 17.5”
BATTERY WEIGHT: 12AH battery 3.45KG/7.5lbs
WEIGHT CAPACITY: 285lbs (130kg)
STANDARD FEATURES: Adjustable Kickstand, Water Bottle Bosses

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