The Rio Fatboy

a bike with massive power.

at ease on road and off road.

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The Rio FB is currently out of stock until September.
Please follow this link to the Rio LS

The Woosh Rio FB (FatBoy):
8-speed, hydraulic brakes front and rear, high capacity battery, hi-speed hub motor, 24kgs.
New shape 18" diamond frame, adjustable riding position, about 25 miles on flat roads with 13AH battery.
The new Woosh Rio FatBoy is just as comfortable on road and off-road.

The Rio FB is best if:
You live on a farm
You need a beefy motor, like the Bafang G06
You are over 5ft6.

How to buy this bike?
Call us with your card. (01702) 435566
We'll help with any queries before you actually order.
Or pay with Paypal, use the online shop.

Only £1,029 with 13AH battery
Only £1,079 with 15AH battery

Price including delivery
Characteristics Rio FB
Frame size46cm 18"
Wheel size26"
Tyres26.0 x 3.0 in fat tyres
Kenda K1016 Kiniption tyres
Acera 11T-34T
Quick releaseFront
ThrottleLeft Thumb Throttle
Dual controls
Pedal assist and thumb throttle.
To turn on the electrics, press the red on/off button the LCD display on the left handlebar.
There are 6 level of assistance, 1 provides the least assistance, 6 the highest.
Press the up and down button to select the desired level.
The 8 gears are controlled by your right thumb.
As well as pedal assist, the LS Fat Boy has a throttle on the left. Start pedalling, the motor will kick in and the bike will woosh you along nicely - the motor is very quiet.
You can go up more or less any hill.
The bike is also very pleasant to pedal with no power.
This bike has been given an EN15194 certificate.
Maximum assisted speed is 15mph and computer controlled.

The frame drawing: Link
Overall size:180.4cm x 101.4cm
Frame size:46cm (18 inches) alloy frame
Saddle height:82cm-105cm
Handlebars:68cm overall
Tyres:26in x 3.0in
Weight with battery:24kgs

- Battery mounted on the downtube for better weight distribution and handling.
- Powerful Bafang G06 special motor for fat bikes with larger magnet core for more torque.
- Controller neatly integrated inside the battery cradle.

The Rio FB

Main features

  • delivered 85% built, ride away in minutes
  • all important components are from the best top brands: Kenda, Ounce, Promax, Shimano
  • all important bolts, nuts, spokes are made of stainless steel
  • fully accessorized: lights, bell, horn, reflector, mudguards, rack, chainguard, propstand
  • 5 levels of pedal assist, easy full speed twist throttle for safe start at traffic lights
  • Lishui 17A controller
  • 36V 13AH/15AH/17AH Lithium ion battery
  • 24kgs – light enough to ride without power.


  • 36Volts 13AH or 15AH or 17AH Lithium battery
  • Dual control: pedal assist and twist grip throttle
  • range: about 25 miles with 13AH battery on flat roads with throttle control, more with pedal assist
  • 18″ frame, 26″ wheels, suitable for average to tall riders (5′ 6″ and above)
  • Aluminum frame
  • Motor: high torque Bafang G06 motor rated 250W
  • Brakes: front and rear hydraulic disc brakes
  • Saddle: Velo comfort style
  • Battery charger for UK mains
  • Weight (including all accessories): 24kgs
  • bell and lights
  • Guarantee: 1 year parts and labour, excluding consumables

Other features

  • no need for tax, insurance or DVLA registration
  • clean energy, costs less than 0.1p per mile
  • UK and European compliant
  • for riders 14+, over 5ft6