For further information regarding the Full Throttle Option,

Technical Specification

Motor:  Wisper High efficiency, 250W hi torque brushless motor, easily ridden past 15.5mph with almost no motor drag

Throttle:  Standard: Thumb throttle to 4mph (6km/h) and Thumb throttle to 15.5mph (25km/h) when pedalling. Full throttle option available.

Throttle only range:  Using your Wisper bike on throttle only will reduce your range by up to 30%. If your bike has been upgraded so it works on the throttle only, we still suggest pedalling when you are able to do so. Use the throttle only function when you need to rest or to help you pull away when setting off.

Battery:  Lithium standard slimline 360Wh or long range 540Wh Lithium

Max Range 360Wh: 50 miles (80km)
Max Range 540Wh: 70 miles (110km)

Controls:  Wisper Back lit LCD display with remote controls

Weight:  360Wh: 21Kg  540Wh: 22kg

Frame:  Wisper Tailwind 6061 alloy hand welded, custom butted tubing / tapered headtube / BB68 / Internal cable routing / replaceable hanger

Mudguards: Aluminium custom made

Frame Size:  19″ 48cm

Colour:  Black or Stone

Fork:  Alloy twin blade

Chain-set:  Black alloy 48T chainring Crank length 170mm

Rear Derailleur:  Shimano Alivio Shadow design 9 speed derailleur

Shifter:  Shimano Alivio 9 speed M3100 rapidfire shifter

Cassette:  Shimano CS HG400 11-34T

Chain:  KMC X9 rust resist 9 speed

Stem:  Alloy 6061 oversized 31.8mm / 1 1/8″  6° angle

Handlebar:  Alloy 6061 Flat  9°  740mm

Lights: Alloy super bright front and rack mounted rear, run from bike battery

Seat post:  Black anodised alloy 30.9 x 350mm

Saddle:  Wisper Comfort

Brakes:  Wisper Hydraulic 180mm disc front and 160mm disc rear

Wheels:  Alloy black anodised double wall 27.5” x 1.24″ (31.4mm)

Tyres:  Kenda 27.5” 2.2 high puncture resistance with reflector

Rear Rack: Aluminium 15kg load with cable tidy

Max Load: including luggage 21 Stone / 135kg

*Finance subject to credit check