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  • (310) 862-5001 - Playa Vista (424) 744-8148 - Santa Monica

Surface 604 Electric: Colt Electric Bike - 2020

Surface 604


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Product Description

Surface 604: Colt Electric City Bike - 2020

A classic electric bike designed for cruisers and commuters looking for comfort and power. The Rook features a 500W motor (peaks at 750W) with a 48V battery that allows riders to travel up to 50 miles range on a single charge. Additionally, the Colt comes fully-loaded with every feature needed to make riding effortlessly including a suspension fork, adjustable stem, built-in rear rack, front and rear fenders, and LED lights.


Color: Matte Black

Sizes: Small-Medium: 17.5″, Medium-Large: 19″



1. 500w Geared Hub Motor

The Colt comes equipped with a 500w geared hub motor that is extremely powerful (peaks at 750W) and is well-suited to carry heavy loads. The Colt provides ample power at an outstanding value.

2. Long-Range Battery Pack with Power Bank

Unlike other electric assist bikes with bulky batteries taking up space on rear racks, the battery for the Colt is placed discreetly in the down tube, also assisting with better weight distribution. Out high capacity 48V / 10.4Ah Samsung lithium-ion battery provides maximum range, as the Colt can travel up to 50 miles on a single charge. As an added bonus, the battery also features a USB plug for charging mobile devices on the go.

3. Torque Sensor and Throttle on Demand

With a torque sensor and throttle on demand, the Rook is great for those traveling longer distances (you can go up to 45 miles on a single charge), on a variety of grades, and needing a little extra stamina to make it to the office while still being able to enjoy the ride.

4. SRAM "1 X 10" Transmission

The Colt comes standard with a SRAM 10 speed transmission (also known as a "1 x 10"), providing ample range of gearing by on of the most respected name in bike components. The result is the ability to climb steep hills and commute with comfort and ease.

5.Loaded with Extra Features

The Colt is fully loaded with every feature need to make riding effortless, including an adjustable stem, powerful front and rear LED lights, a heavy-duty built-in rear rack (with attachments for saddlebags/panniers), front and rear fenders, and a chain guard, keeping water, mud and grease off clothes and ensuring riders arrive fresh and mess-free.


New Features for 2020:

Resized Battery


▪ Semi-embedded 440mm battery that now fits all models. 

▪ 48V10.4ah (499.2wh) and 48V14ah (672wh) battery options are offered on all models. 

▪ Down tube - reinforced and extended by 30mm.

▪ Upper tube - restyled and reinforced, then extended by 15mm.

▪ Lower top tube - for more stand-over clearance.

New Lengths


▪ Head tubes come in two lengths 175mm SM and 186mm ML. 

▪ Taller riders on ML size bike get more comfortable, upright riding position. 

▪ Consistent seat tube size 30.4 for all models.

New Controller

▪ Repositioned to better protect against elements.

▪ Powerful and efficient 12 MOSFET 25AH. 

▪ Physical length is down from 180mm to 160mm.

▪ Fits across all models Colt, Rook, Shred and Boar.

▪ Easier-to-access controller for servicing and replacing.

▪ Extended downtube provides more space for wires.

Other Improvements


▪ Custom designed dropout to accommodate TMM style torque sensor.

▪ Large 180mm rotors front/rear to provide better braking and control.

▪ Upgraded pannier system for wider selection of saddle bags.

▪ Better plug and play wire management.

▪ Color LCD display with built in micro USB jack.



Drive System

Bafang rear-mounted geared drive hub


500w+ (peaks at 750w)

Drive Mode

Torque sensing pedal assist with a throttle




48V 10.4Ah / 500Wh Samsung lithium-ion

Charge Time

5 hours for a full charge from empty 

Battery Life

Up to 50mi (80km) depending on mode

Weight Including Battery

55lbs (25kg) 

Display Type

Fixed, backlit LCD display

Rear Derailleur

SRAM X5 10-speed


SRAM PowerGlide™ 1070, 11-36T

Shift Levers

SRAM X5 trigger shift


Tektro Auriga hydraulic disc, post mount, 160mm rotor


SR Suntour XCT



Frame Type


Frame Material

6061 aluminum alloy


Wellgo platform


620mm, 15% backsweep, 20mm rise


Ergonomic rubber

Seatpost Diameter



Selle Royal, ergonomic, wide


26″ x 2.1″ Kenda Kranium

Added Features

Chain guard, rear rack, fenders (front and rear), LED lights (front and rear)

Sizes Available

Small-Medium: 17.5″ (rider height 5’2” to 5’7”)
Medium-Large: 19″ (rider height 5’8” to 6’6”)

Standover Height

Small-Medium: 508mm
Medium-Large: 546mm

Weight Capacity

285lbs (130kg)







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Returns Policy

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Santa Monica: (424) 744-8148

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