Quick answer: The bike arrives in one box, part-built, with the tools in it. Attach the front wheel and handlebars, which takes about five minutes on most models. Charge it on Christmas Eve, because it takes around four hours and it won't arrive full. Have a helmet ready to go on before the bike does. Then the only question left is where they're allowed to ride it, and for most families the answer is the back garden.
Still choosing which bike? This guide is about what happens after you've ordered. For which model suits which child, start with The Perfect Christmas Present or the Fit Finder.
What actually turns up
One box, and it's heavier than it is awkward. A K4 ships at around 13kg all in; a Cruiser at about 16kg boxed. Bigger bikes are heavier again, but they're all a one-person carry for an adult and none of them need two people to get through a front door.
The box is plain cardboard. There's no bike printed on the outside, which matters more than you'd think if the person answering the door is eight years old and curious.
The practical problem is that a dirt bike box is bike-shaped, and there is no disguising that. Two things that work: have it delivered to a neighbour or to work, or get it into the loft, the boot of the car or a locked shed the same day it lands. Don't leave it in the hall "just until later" — later is when they come home from school.
If you'd rather not gamble on the timing at all, order early and accept that it sits hidden for a few weeks. Stock sits in our own UK warehouse and goes out on 1–2 working day delivery, so the limiting factor in December is rarely the courier — it's which colours are left.
Christmas Eve: the two jobs
Do both of these on the 24th, after they've gone to bed. It's half an hour of work and it's the difference between riding on Christmas morning and riding on Boxing Day.
One: build it. Every bike arrives mostly assembled. On the K4 and K7 Pro it's the front wheel and the handlebars, with tools included, and it's done in about five minutes. The K10 Pro is the same job — wheel and handlebar alignment — with tools and instructions in the box. The K22 arrives around 95% built and takes roughly fifteen minutes.
There's a step-by-step setup video for every model on our build videos page. Worth having open on your phone while you do it, rather than working from the leaflet.
Two: charge it. This is the one that catches people out. Bikes don't ship fully charged, and a full charge takes around four hours on most models — five on the K22. Plug it in when you've finished building and it'll be ready long before anyone's awake. On the K4 the charger light turns green when it's done.
| Model | Setup on the night | Charge from flat |
|---|---|---|
| K4 | Front wheel and handlebars, under 5 min | ~4 hours |
| Cruiser | Bike, charger and manual in the box | ~4 hours |
| K7 Pro | Front wheel and handlebars, about 5 min | ~4 hours |
| K10 Pro | Wheel and handlebar alignment | ~4 hours |
| K22 | Around 95% built, about 15 min | ~5 hours |
Worth doing while you're there: put the packaging somewhere you can get at it again. If the size turns out to be wrong, a bike that's gone back in its own box is a much easier conversation in January.
Christmas morning: the first ten minutes
They will want to ride it immediately and indoors. Both of those are worth heading off before the wrapping paper is open.
Helmet before bike. If the helmet goes on the first time they ever sit on it, you never have the argument again. If it doesn't, you'll be having that argument all year. Wrap the helmet separately and give it first — it works far better than producing it afterwards as a condition. What Helmet Does My Child Need? covers which type, and the size guide covers the fit.
Start on the low setting. Every bike has parental speed controls. Set it to the lowest before they get on it, not after. On a K4 that's 8 km/h, which is a brisk walk — you can stay alongside them, which is what you want for the first few goes.
Pick flat and boring over interesting. First ride on a lawn or a flat bit of driveway, nothing to aim at and nothing to fall off. The hill can wait until the afternoon.
If this is their first ever powered bike, How to Teach Your Child to Ride walks through the first session properly.
Where they can ride it on the day
Private land, with the landowner's permission. Not roads, not pavements, not parks, not cycle paths. An electric dirt bike is a motor vehicle in UK law and it isn't road legal, and that hasn't changed for 2026.
In practice, on Christmas Day, that almost always means your own garden or driveway — which is fine, and is where most first rides happen anyway. A relative's garden counts too, as long as you've asked. What it rules out is the obvious one: taking it down to the local park because the garden's small.
The full picture, including what counts as private land and what to do if you haven't got a garden, is in Where Can Kids Legally Ride Electric Dirt Bikes in the UK? Worth five minutes before the day rather than after.
This is general guidance, not legal advice.
Riding it in late December
Three things change in winter, and none of them are a reason to wait for spring.
Damp is fine, deep water isn't. The bikes are IPX4 splash resistant, so a wet lawn, light rain and mud are all within normal use. Heavy downpours and driving through puddles deep enough to reach the motor are not. If you wouldn't walk through it in trainers, don't ride through it.
Cold shortens the ride. Lithium batteries give less in the cold than they do in July. A bike quoted at 10km will do noticeably less at four degrees. It's not a fault, and the range comes back when the weather does.
It gets dark at four. This is the real constraint over Christmas, not the weather. Most of the riding happens between lunch and mid-afternoon, which is worth knowing when you're planning the day around it.
Gloves make more difference than anything else to how long a December ride lasts. Cold hands end a session faster than a flat battery.
Putting it away
After a muddy ride, wipe it down rather than hose it — it's splash resistant, not waterproof, and a jet of water is not a splash.
If it's going to sit unused through January, store the bike somewhere dry and bring the battery in out of a freezing shed. Don't leave it stored completely flat for weeks, and give it a top-up charge every month or so if nobody's riding it. Lithium batteries are happier part-charged and indoors than empty and frozen.
The manual for your model is the final word on charging and storage, and it's in the box. If you can't find it, ask us and we'll send it over.
Frequently asked questions
Will it be ready to ride on Christmas morning?
Yes, if you build and charge it on Christmas Eve. If you leave both until the morning, the build takes minutes but the charge takes about four hours, so the first ride lands in the afternoon at best.
How much assembly is there, really?
Front wheel and handlebars on most models, with the tools supplied. Five minutes on a K4 or K7 Pro, about fifteen on a K22. You don't need anything from the garage.
Can it be left outside?
No. It's splash resistant for riding, not built to live outdoors. A shed or a garage is fine; the garden is not.
What if the size is wrong on the day?
Get in touch before it's been ridden outside and we'll sort it out. Keeping the box makes that much easier. If you'd rather not risk it, send us your child's height before you order and we'll tell you honestly which one fits.
Do they need anything besides the bike and a helmet?
Knee and elbow pads, and gloves for winter. Goggles once they're riding properly off-road. What Safety Gear Does My Child Need? goes through the lot.
Is Christmas Day too cold for a first ride?
No. Dry and four degrees is a perfectly good first ride with gloves on. The thing that ends it early is cold hands, not the bike.
The bottom line
Build it and charge it on Christmas Eve. Wrap the helmet separately and give it first. Set the speed to the lowest setting before they get on. Keep the first ride flat and short, and keep the box.
Do those five things and the bike gets ridden on Christmas Day rather than looked at — which, on the day, is the whole point.
Browse the Kubbi dirt bike range →
Kubbi supplies electric bikes and scooters to over 15,000 UK families. Everything ships from our own UK warehouse with a 12-month warranty and spare parts held in stock.