Shopping cart

Your cart is currently empty

Product image slideshow Items

  • Surface 604 Surface 604 Big Sky
  • Surface 604 Surface 604 Big Sky
  • Surface 604 Surface 604 Big Sky
  • Surface 604 Surface 604 Big Sky

Surface 604 Big Sky

Excl. tax

A comfortable electric bike suited for cruisers and commuters. The Surface 604 500W Big Sky Cruising Electric Bike has a powerful 500W engine and a 48V 14ah battery that can be changed to a 20ah battery.

More sizes are available.

The rating of this product is 0 out of 5

In stock (1)

Also available for in store purchase
2028 S Coast Hwy, Oceanside, CA 92054

The HIGH-STEP Commuter - BIG SKY 2023 is similar to Colt in every way except for the fresh new look!

Built for daily commuters looking for some extra momentum to get them to work quickly or cruise, easily and in comfort. The Big Sky is also loaded with features. Having a large comfy saddle makes getting around a breeze.

It comes equipped with a 500W hub motor that is extremely powerful (peaks at 750W). With a torque sensor and throttle on demand, the Big Sky is great for those that could benefit from an extra boost to make it up the hill.

Our high-capacity 48V12Ah STOCK or (Samsung lithium-ion battery 48V12Ah and 48V20Ah - upgrades) provides maximum range, as the Big Sky can handle heavy loads and travel up to 50 miles on a single charge.

The Big Sky is fully loaded with every feature needed to make riding effortless.

MOTOR: 500W (Peaks At 750W) Bafang Geared Hub Brushless Motor

UPGRADED MOTOR WIRE HARNESS: 30Ah, can handle up to 120C current

DRIVE MODE: Drop Out Torque Sensing Pedal Assist with a Throttle

TORQUE: 65Nm of Throttle

THROTTLE: Thumb Push Activated Throttle

CONTROLLER: SURFACE604 Designed 12 MOS 48V 500W 25Ah, Smart

TOP SPEED: 20mph (32kmh)*, Comes as Class 2

(Unlocked) 28mph (45kmh), as Class 3

BATTERY: Included option: 48V 12Ah / 576Wh Lithium-ion 18650 cells

  • Upgrade option: 48V 14Ah / 672Wh Samsung lithium-ion 18650 cells
  • Upgrade option: 48V 20Ah / 960Wh Samsung lithium-ion 21700 cells


  • Up to 35mi (56km) with a 48V12Ah Battery
  • Up to 45mi (72km) with a 48V14Ah Battery
  • Up to 65mi (105km) with a 48V20Ah Battery

BATTERY CHARGE TIME: 3-4 Hours for a Full Charge from Empty

DISPLAY TYPE: SURFACE604 Color LCD Display with USB Jack

  • Bigger display: 3.5” for 2022 vs. 3.2” for 2020

FORK: Rigid Front Fork



BRAKES: TEKTRO Auriga E350 Hydraulic Disc Brakes with Motor Inhibitors and 180mm Rotors

CRANKSET: SAMOX 42T Front Sprocket

ROTORS: 180mm Rotor Front/Rear x 2.34mm Thick

BOTTOM BRACKET: SAMOX Sealed Bottom Bracket

FRAME TYPE: Tapered Headtube, Custom Reinforced Battery Mounts, Internal Cable Routing, Post Mount Brakes

FRAME MATERIAL: 6061 Aluminum Alloy

STEM: Zoom

HANDLEBAR: Cruiser style, 700mm, 45-degree backsweep, 30mm rise

GRIPS: PU Leather Wrapped, Full Length 145mm

PEDALS: WELLGO Platform, with Die Casting Body

CHAIN: KMC 9-Speed

SEAT: Selle Royale Gipsy Elastomer Ergonomic Gel Saddle


WHEELS/TIRES: 27.5” X 2.4” Custom S604 Innova Tires with Reflective Sidewall

RIMS: Aluminum Alloy Double Wall Rim, 27.5”x13Gx36H

KICKSTAND: Adjustable Heavy-Duty Aluminum

DISPLAY: Large Fixed-color LED Display with USB Jack

STANDOVER HEIGHT: Small-Medium: 31.5” (800mm)


  • Frame Sizes: M/L - 19”
  • For Riders: M/L 5’6”-6’4”


  • 25.4KG/56lbs (12AH)
  • 25.6KG/56lbs (14AH)
  • 26.75KG/59lbs (20AH)


  • 12AH battery 3.45KG/7.5lbs
  • 14AH battery 3.63KG/8.0lbs
  • 20AH battery 4.65KG/10lbs

WEIGHT CAPACITY: 285lbs (130kg)

STANDARD FEATURES: Adjustable Kickstand, Chain Guide, Water Bottle Bosses

OPTIONAL UPGRADE FEATURES: 18650 Samsung Cells 48V 14Ah lithium-ion battery OR 21700 Samsung Cells 48V20Ah Battery, NCX Suspension Seat Post, Büchel Shiny 120 Headlight, Rear LED tail light, SR Suntour XCM Suspension fork

0 stars based on 0 reviews
Add your review