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  • Surface 604 | Rook | 2020 | White
  • Surface 604 | Rook | 2020 | Black
Surface 604

Surface 604 Electric: Rook Electric Bike - 2020

$145.00 (Fixed shipping cost)

 Product Description

Surface 604: Rook Electric City Bike - 2020

A step-through electric bike designed for cruisers and commuters looking for a fast and comfortable ride and power. The Rook features a 500W motor with a 48V battery that allows riders to travel for up to 50 miles battery range on a single charge. Additionally, the Rook 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. 



Black w White




Small-Medium: 17.5″

Medium-Large: 19″





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





1. 500w Geared Hub Motor

The Rook comes equipped with a 500W geared hub motor that is extremely powerful and is well-suited to carry heavy loads. 

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 Rook is placed discreetly in the down tube, also assisting with better weight distribution. Our high capacity 48V / 10.4Ah lithium-ion battery provides maximum range, as the Rook 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 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 Rook comes standard with a SRAM 10 speed transmission (also known as a “1 x 10”), providing ample range of gearing by one of the most respected names in bike components. The result is the ability to climb steep hills and commute with comfort and ease.

5. Loaded with Extra Features

The Rook is fully loaded with every feature needed to make riding effortless, including an adjustable stem, powerful front and read 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. 


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)


Note, all specifications can change at any time by the manufacturer without prior notice.











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Bike Attack Electric | USA, Santa Monica CA, 2904 Main Street | Phone: (424)744-8148
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