A carbon frame, a torque sensor that answers before you finish the pedal stroke, and a 720 watt hour pack that clears a full week. This is the whole bike, revealed.
Range, mapped
The pack is sized for real routes, not a lab loop. Flat towpath or a climb out of the valley, the assist reads the gradient and spends the battery where you actually need it.
Commuter loop, gentle grade
Up to 120 kmStop start, some climbs
Around 85 kmSustained climbing, full assist
Around 55 kmEmpty to full on a wall socket
3.2 hoursOne build, one battery, one honest set of numbers. Nothing held back for a trim upgrade.
Range
120km
Up to, on eco assist
Assist top speed
45km/h
Off road tune, capped for road use
Peak motor
500W
85 Nm of torque
Battery
720Wh
Removable, locks to the frame
Four colourways over the same flagship build. Choose one and watch it resolve, pixel by pixel.
Slate · Cool matte greyKestrel One
4,290GBP
Refundable deposit . Balance on delivery . Two year warranty
One dial on the top tube cycles the assist. The motor never fights you, it just changes how much of the work it takes on.
The lightest touch. The motor smooths the pedal stroke and stretches the battery, so a flat commute barely spends a bar.
Balanced for stop and start traffic. Torque arrives the instant the light turns green, then eases off once you are up to pace.
Full assist for the climbs. All 85 newton metres on tap, so a fire road out of the valley feels like a rolling hill.