Summary of the Surface 604 Sunny Day E-Bike

The Surface 604 Sunny Day is the smaller sibling of the two Cruiser models offered by Surface 604, the other being the Big Sky, which boasts a higher 19-inch frame. The Sunny Day, with its 17.5-inch frame, offers a mid-step design, providing a balance between accessibility and stability. While some may consider it a step-through, it’s not the classic wave style but retains a double top tube design, enhancing frame stiffness—ideal given its cruiser and city bike hybrid nature. The bike features reflective tires, the option to add a rear rack and fenders, but lacks a bottle cage mount. Priced at $2,199, it’s quite affordable and can be bought directly from Surface 604 or through local shops for a hands-on test ride experience.

Visually, the Sunny Day stands out with its light grayish-blue frame accented with purple and gray, a color scheme carried through to the rims, ensuring a cohesive and attractive look. Although it only comes in this single color option, it’s designed to be bright and visible, especially with the reflective sidewalls aiding nighttime visibility. While it doesn’t come with lights, it’s pre-wired for them, and optional lighting kits can be integrated seamlessly.

In terms of safety, the bike includes motor inhibitors on both brakes, which are Tektro hydraulic disc brakes with adjustable reach levers, suitable for riders with smaller hands. The large 180mm rotors provide ample stopping power and cooling surface area, while the 27.5 x 4-inch tires offer a comfortable and cushioned ride, absorbing shocks and bumps effectively despite the absence of a front suspension fork. The rigid aluminum alloy fork complements the upright riding position, making suspension less critical and maintaining a lighter overall weight.

The bike’s saddle, a Selle Royal Gypsy, features large elastomer bumpers for added comfort. The seat post, though rigid, can be swapped out for a suspension post for those seeking extra cushioning. The handlebars are ergonomically designed, sweeping back to dampen vibrations, and the quick-release mechanisms on the seat and front wheel make adjustments and maintenance straightforward.

The Sunny Day is powered by a motor delivering between 500 to 750 watts, and while it’s not from a well-known brand like Bafang, it performs well, albeit with a bit more noise. It’s a Class 2 e-bike, offering pedal assist and a trigger throttle, with a top speed of 20 mph, which can be unlocked to reach up to 28 mph for a Class 3 performance. The bike is equipped with a 9-speed Shimano Alivio drivetrain, providing a wide gear range suitable for various terrains and speeds.

Battery-wise, the stock 48V 12Ah battery offers over 500 watt-hours of power, with optional 14Ah and 20Ah packs available for extended range. The battery is removable, making it convenient for charging and security. The bike’s display is a backlit LCD with a color interface, showing battery percentage, speed, trip distance, and other crucial metrics. It’s user-friendly and allows customization of various settings, including switching between metric and imperial units.

In summary, the Surface 604 Sunny Day is a versatile and stylish e-bike, ideal for urban commuting and leisurely rides, offering a good balance of performance, comfort, and affordability.

Information of the Surface 604 Sunny Day E-Bike

  1. Range: Variable based on battery choice and usage
  2. Top Speed: 20 mph (can be unlocked to 28 mph)
  3. Motor Size: 500W (750W peak)
  4. Battery Size: 48V 12Ah (optional 14Ah and 20Ah)
  5. Frame: 17.5-inch mid-step
  6. Warranty: 1-year comprehensive, 3 years on the frame
  7. Safety Certified: Information not provided
  8. Digital Display: Yes, backlit LCD color display

Full Specifications of the Surface 604 Sunny Day E-Bike

  • Miles Per Charge: Depends on battery option and usage
  • Max Speed: 20 mph (28 mph when unlocked)
  • Max Rider Weight: Information not provided
  • Waterproof Rating: Information not provided
  • Motor Size: 500W (750W peak)
  • Battery Size: 48V 12Ah (optional 14Ah and 20Ah)
  • Tire Size: 27.5 x 4 inches
  • Product Weight: Approx. 55 pounds
  • Dimensions: Frame size 17.5 inches
  • Warranty Length: 1-year comprehensive, 3 years on the frame
  • Frame Material: Aluminum alloy
  • Color(s): Light grayish-blue with purple and gray accents
  • Inner Tubes: Information not provided
  • Brakes: Tektro hydraulic disc brakes, 180mm rotors
  • Charge Time: Depends on battery capacity and charger (standard 2 Amp, optional 4 Amp)
  • Suspension: Rigid aluminum alloy fork, no suspension fork
  • Display: Backlit LCD color display
  • Headlight: Optional, pre-wired for lights
  • Charger: Standard 2 Amp, optional 4 Amp for faster charging