Sigma – Low Step Folder

The Sigma must surely be one of the lowest step-through folding electric bikes available on the market today. Manufactured in Europe to all the latest quality standards the Sigma inspires confidence. The low step-through frame makes it very easy to mount yet the frame colours and graphics give the bike style and panache.

The Sigma is fitted with Shimano Nexus 7 speed hub gears that are easily selected with the Nexus twist grip gear changer. Battery and assistance levels are readily seen and controlled from the handlebar mounted display.

The Sigma can easily be folded for storage making it ideal for motorhomes and leisure riders or for those with limited space at home. When folded the hub gears mean that the chain is kept neatly tucked away.

Liveried in a choice of one of three Batribike colours of Hunter Green, Earth Brown or White Shadow, the Sigma has colour matched mudguards and forks. The gold Jupiter Metallic chain guard and graphics compliment the frame colour, along with matching seat and grips, and quality Schwalbe tyres. This creates a very well presented folding electric bike.

Pricing from £1249

With 375 Wh Standard Battery (10.4 Ah) and LED Display

  • Add £105 for Mini LCD upgrade
  • Add £115 for Centre LCD upgrade
  • Add £105 for 475 Wh Long Range Battery (13.2 Ah)
  • Add £190 for 560 Wh Extended Duty Battery (15.6 Ah)

A stylish super-low step-through folding electric bike with 7 speed hub gears



 Standard Battery  45 to 100 km  28 to 62 miles
 Long Range Battery  60 to 132 km  37 to 82 miles
 Extended Duty Battery  75 to 150 km  47 to 93 miles

Distances tested with 75 kg rider on level ground with no wind.


 Overall Length  155 cm  61 ins
 Wheelbase  105 cm  41.3 ins
 Height  106 cm  41.7 ins
 Width  51 cm  20.1 ins
 Saddle Height – Standard  72  to 101 cm  28.4 to 39.8 ins
 Frame Size  35 cm  13.8 ins
 Step-Through  24 cm  9.5 ins
 Maximum Loading
(Rider & Luggage)
 120  kg  18 st 12 lbs
 Folded Size
73 x 82 x 48 cm  28.7 x 32.3 x 18.9 ins
 Total with Standard Battery  21 kg  46.3 lbs
 Bike Only  17.9 kg  39.5 lbs
 Standard Battery  3.1 kg  6.8 lbs
 Long Range Battery  3.6 kg  7.9 lbs
 Extended Duty Battery  4 kg  8.8 lbs


 Frame Material  Aluminium Alloy
 Gears  Nexus 7 Speed Hub
 Brakes  Tektro V (Front and Rear)
 Lights  System powered LED lights
 Saddle  Selle Royal
 Bell  In Brake Lever
 Stand  Side – adjustable
 Gear Shift  Nexus Revo Shift
 Wheel Size  20″
 Frame 0502 – White Shadow
0503 – Earth Brown
0504 – Hunter Green
 Forks Frame Colour
 Mudguards Frame Colour
 Chainguard Frame Colour
 Saddle 0502/0504 – Brown
0503 – Cream
 Grips 0502/0504 – Brown
0503 – Black/Cream
 Tyres 0502/0504 – Brown
0503 – Cream
Schwalbe Big Apple
 Battery Position Carrier



This bike is supplied with a 36V 375 Wh battery as Standard. (10.4 Ah)

Optionally it can be upgraded with the following batteries:-

Part No. Type Rating
50774-BL-C-36V-UK Long Range 475 Wh 13.2 Ah
50775-BL-C-36V-UK Extended Duty 560 Wh 15.6 Ah


This bike is supplied with the LED Display as Standard.

LED Display

Five levels of speed related control.

Optionally it can be upgraded with the following:-

Mini LCD

Mini LCD – with 4 levels of power related control and built in speed/distance cycle computer.

Centre LCD

Centre LCD – with 5 levels of power related control and built in speed/distance cycle computer in a larger , easy to read package.

Read more about Display Options here…


The following items are available for this model:-