diffBalance bike
Balance first. Everything else after.
No pedals, no chain, no motor. One thing to learn: balance.
Scroll01 — FRAME
Light enough for a child to lift.
One-piece cast aluminium body. 3.2 kg — a three-year-old can pick up their own bike and carry it.
3.2 KG · ALUMINIUM · ONE PIECE
02 — GEOMETRY
Feet never leave the ground.
The saddle is adjustable; it drops to a height where both feet reach the ground when seated. That is the only way to find balance — and to stop.
ADJUSTABLE SADDLE · FEET DOWN
03 — WHEELS
Pneumatic, 12 inch.
Air tyres soften kerbs and gravel. Unlike foam, they let the child feel the road — which is where balance is learned.
12" · PNEUMATIC · 556 MM WHEELBASE
04 — COCKPIT
Sized for small hands.
Bar at a child's shoulder width, grips for a small palm. No screen, no button — the only thing to learn is balance.
CHILD SIZED · NO SCREEN
05 — STOPPING
Stops with feet.
A balance bike is stopped with the feet; the child learns to judge speed with their own body. We fit no complex brake — at this age it is dead weight and the wrong habit.
FOOT BRAKING · NO BRAKE FITTED
Philosophy
Balance is not taught, it is earned.
When a child first finds their balance, they begin learning how to ride every machine for the rest of their life. We build the machine that makes that first moment possible — not a toy, a first real vehicle.
Engineering
Engineered to a child's scale.
The centre of gravity is kept low so the tipping angle grows. Most of the mass sits close to the wheel axes — the child gets time to recover before falling.
Every component is tested individually. Each measured value is written into the spec — we don't publish what we haven't measured.
Production
Not made in a toy factory.
diffEVs is built on YK Holding's production line — in a factory that makes spare parts for the automotive industry. From frame casting to assembly, every step follows that industry's measurement and quality discipline.
Facility imagery will be added from real photography. We don't show certification badges we don't hold — documents are listed here one by one when complete.
Electric bike
You pedal. We assist.
250 W mid-drive motor, assistance that cuts out at 25 km/h, battery built into the frame.
Scroll01 — FRAME
One-piece monocoque frame.
The body is one piece; the battery is built into the frame, with no box hanging outside.
MONOCOQUE · WHEELBASE 1090 MM
02 — BATTERY
The battery lives in the frame.
The battery sits low inside the frame. Capacity will be confirmed before series production; we do not publish estimates.
BUILT-IN BATTERY · CAPACITY BEFORE SERIES PRODUCTION
03 — MOTOR
250 W mid-drive motor.
The motor runs only while you pedal and cuts out at 25 km/h.
250 W · 25 KM/H · PEDAL ASSIST
04 — WHEELS
20-inch wheels.
ISO 406 rims with wide tyres. Head angle 72°.
20" · ISO 406
05 — CLASS
No registration, plate or licence.
No throttle; assistance comes when you pedal. This class needs no registration, plate or licence.
PEDELEC · NO THROTTLE
Status
In prototype production.
Prototype production has begun; diffEVs MOVE is not on sale yet and no orders are taken. Dimensions are design targets and will be verified with a production sample.
Production
Under one roof.
diffEVs is built on the YK Holding production line; MOVE prototype production has begun.