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2023 Surface 604

Sunny Day

A 650b aluminum frame cruiser e-bike with mid-range components and tektro hydraulic disc brakes.

Manufacturer Price

$2,199
Weight7.5 lbs (frame)  
FrameAluminum
SuspensionRigid
ForkAluminum
Wheels650b Aluminum
GroupsetAlivio
Motorhub-drive
Battery576Wh
BrakesTektro Hydraulic Disc
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Insights
Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Sizing
17.5"

3'11" +

🐐 Estimated

Rider Fit Notes

None yet.

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Reviews
Electric Bike Review
Surface 604 Sunny Day Review

Jul 2023

Price: $2199.00 | Model Year: 2023 | A zippy approachable cruiser ebike with mounting options for fenders and a rear rack. Ships as Class 2 with responsive torque sensing pedal assist and a trigger throttle that overrides all five levels with 100% power. Can unlock higher top speeds as Class 3 if you wish. This is the mid-step smaller frame, but Surface 604 also sells the larger Big Sky high-step.

Observations
  • A zippy approachable cruiser ebike with mounting options for fenders and a rear rack. Ships as Class 2 with responsive torque sensing pedal assist and a trigger throttle that overrides all five levels with 100% power. Can unlock higher top speeds as Class 3 if you wish. This is the mid-step smaller frame, but Surface 604 also sells the larger Big Sky high-step.

  • Default battery is 48v 12ah, but they also sell a 14ah and 20ah pack for extended range. Beautiful color display panel with USB charging port below, second USB port built into the side of the battery pack. Great 9-speed Shimano Alivio with wide 11-36 tooth cassette. Powerful 180mm Tektro hydraulic disc brakes with adjustable reach levers.

  • Has mounting points for adding fenders and a rear rack if you wish, but no bottle cage mount. Pre-wired for use with an integrated headlight and tail light that blinks when you brake, rear light mounts to the optional rear rack. Light colored frame and reflective tires improve safety when riding in low light conditions.

  • Oversized saddle and handlebar create upright body position, add comfort. No suspension fork, but you could lower tire pressure and add suspension seat post. Includes a basic 2 amp charger, but S604 does sell a 4 amp fast charger. Battery charge port is low near the left crank arm, pedal assist can activate unexpectedly if the chain bounces excessively.

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Specs
Build
Frame

6061 Aluminum Alloy

Fork

Rigid Aluminum Alloy, 100mm Hub Spacing, 9mm Axle with Quick Release Skewer

Headset

Integrated, Sealed Cartridge, Straight 1-1/8"

Stem

Zoom, 30° Angle, 60mm Length, Two 10mm Spacers, One 20mm Tapered Spacer, 31.8mm Clamp Diameter

Handlebar

Aluminum Alloy, Mid-Rise Cruiser, 30mm Rise, 700mm Length, 45° Backsweep

Saddle

Selle Royal Gipsy, Elastomer Bumpers, Ergonomic Gel

Seatpost

Aluminum Alloy with Forged Single-Bolt Clamp

TypeRigid

Pedals

Wellgo Aluminum Alloy Platform, Wide with Integrated Pins, Black

Grips

Stitched Faux Leather, Ergonomic, Black, Locking

Groupset
Crank

Forged Aluminum Alloy, 170mm Length, Square Tapered Spindle

Shifters

Shimano Alivio Triggers on Right with Optical Gear Window (One Way High Lever, Three Shift Low Lever)

Cassette

9 Speed 1x9 Shimano Alivio Derailleur, Shimano CS-HG201-9 Cassette 11-36 Tooth

Brakes

Tektro Auriga Hydraulic Disc with 180mm Rotors, Dual-Piston Calipers, Three-Finger Tektro Levers Motor Inhibitors and Brake Light Activation Blinking and Adjustable Reach

TypeTektro Hydraulic Disc

Wheels
Rims

27.5

Spokes

Stainless Steel, 13 Gauge, Black

Tires

Custom Surface 604 Branded, 27.5" x 2.40" (60-584)

Electric Components
Motor

Type: Hub, Output: 500, Details: Surface 604 Branded, Generic Manufacturer, Weight: 7.5 lbs (3.4 kg)

Battery

Watt Hours: 576 Wh, Details: Samsung 18650 or 21700 (3,500mAh or 5,000mAh Cells), Reention Dorado Casing, Optional 14ah and 20ah Battery Upgrades, Weight: 7.5 lbs (3.4 kg) (8lb for 672wh Battery, 10lb for 960wh Battery)

Display

Surface 604 Branded, Fixed, Adjustable Angle, 3.5" Color, Backlit LCD, USB Type A Charging Port at Base

Charger

1.5lb 2 Amp Branded Charger, Optional 2lb 4 Amp Fast Charger Upgrade

Rider Notes
Riders Also Viewed

First added July 15

Last updated October 14

Not listed for 599 days