Comparing the Kubbi and Revvi ranges spec-for-spec, Kubbi is the clear winner for UK parents in 2026. Kubbi packs more motor power than Revvi at every age tier, costs hundreds of pounds less, carries UKCA certification, and is backed by a UK warehouse that ships spare parts inside 48 hours. Here's the honest, model-by-model breakdown.
At a Glance
| Kubbi 🇬🇧 | Revvi | |
|---|---|---|
| Cheapest bike | £284.99 (K4) | ~£349 (Revvi 12") |
| Most powerful bike | 2000W (K22, 3000W peak) | 800W (Revvi 20") |
| Most expensive bike | £999.99 (K22) | £1,099 (Revvi 20") |
Right — let's get into the detail.
Why Kubbi Wins on the Spec Sheet
Before the model-by-model breakdown, here's the short version of why Kubbi outperforms Revvi at every tier:
1. Bigger motors at every age range. A Kubbi K4 packs 50% more motor power than a Revvi 12". A Kubbi K7 Pro outguns the Revvi 16" by 130W. A Kubbi K10 Pro has 60% more power than a Revvi 18". And the Kubbi K22 has 2.5 times the motor of the flagship Revvi 20".
2. Lower prices across the board. The K10 Pro comes in £264 cheaper than the equivalent Revvi 18". The K22 — the most powerful bike either brand sells — costs £100 less than the Revvi 20".
3. Proper UKCA certification. Kubbi's flagship K22 carries full UKCA certification, and the K4, K7 Pro and K10 Pro are IPX4-rated for British weather. That's a meaningful safety and engineering difference, not a marketing line.
4. A UK spare parts operation that actually works. Kubbi stocks every single replacement part for every model — battery, motor, controller, throttle, brake lever, kickstand, wheel — in a Belfast warehouse, ready to dispatch the same day. If a bike ever needs a fix, owners are back riding within 48 hours.
5. Direct-to-consumer pricing. Kubbi sells direct from the warehouse to the customer's door, with no dealer markup added on top.
Model-by-Model: Kubbi vs Revvi
Ages 3 to 7 — Kubbi K4 vs Revvi 12
| Kubbi K4 | Revvi 12" | |
|---|---|---|
| Age range | 3–7 | 2–6 |
| Motor | 150W | 100W |
| Top speed | 15 km/h | ~16 km/h |
| Speed modes | 2 (parent-controlled) | 2 |
| Frame style | Mini dirt bike | Balance bike |
| Water resistance | IPX4 | Not rated |
| Certification | UKCA | – |
| Price | £284.99 | ~£349 |
Verdict: The Kubbi K4 is the better buy at this tier. It's £65 cheaper, packs 50% more motor power, is IPX4 splash-proof for the British outdoors, and looks like a proper mini dirt bike rather than a balance bike with a throttle. The added confidence kids get from a "real bike" frame — combined with parent-controlled speed limiting — makes the K4 the smarter first-bike choice.
Ages 6 to 10 — Kubbi K7 Pro vs Revvi 16" & 16" Plus
| Kubbi K7 Pro | Revvi 16" | Revvi 16" Plus | |
|---|---|---|---|
| Motor | 300W | 170W | 250W |
| Top speed | 25 km/h | ~20 km/h | ~20 km/h |
| Suspension | Front fork | None | Front fork |
| Brakes | Disc | Drum | Disc |
| Range | Up to 15 km | ~45 min | ~50 min |
| Price | £384.99 | ~£459 | £559 |
Verdict: This is one of the most lopsided comparisons in the lineup. The K7 Pro has more motor power than both Revvi 16" variants, hits a higher top speed, and is £174 cheaper than the Revvi 16" Plus with effectively the same disc-brake-plus-suspension setup. There's no spec category in which Revvi wins at this tier.
👉 See the Kubbi K7 Pro — £384.99
Ages 8 to 14 — Kubbi K10 Pro vs Revvi 18
| Kubbi K10 Pro | Revvi 18" | |
|---|---|---|
| Motor | 800W | 500W |
| Top speed | 30 km/h | ~32 km/h |
| Battery | 36V 7.8Ah | 36V 5Ah |
| Suspension | Front fork + rear shock | Front + rear |
| Max rider weight | 90 kg | – |
| Age window | 8–14 (6 years) | 8–12 (4 years) |
| Price | £584.99 | £849 |
Verdict: The K10 Pro converts more Revvi shoppers than any other bike in the Kubbi range — and the maths makes it obvious why. It packs 60% more motor power, a bigger battery, and a longer age window so kids get an extra two years out of it before they outgrow it. All of that for £264 less than the Revvi 18". On a like-for-like comparison, this isn't close.
👉 See the Kubbi K10 Pro — £584.99
Ages 14+ — Kubbi K22 vs Revvi 20"
| Kubbi K22 | Revvi 20" | |
|---|---|---|
| Motor | 2000W (3000W peak) | 800W |
| Top speed | 55 km/h | ~35 km/h |
| Battery | 48V 20.8Ah | 36V |
| Range | Up to 50 km | ~35 min flat-out |
| Max rider weight | 120 kg (adults too) | – |
| LED headlight | ✅ | ❌ |
| Speed modes | 3 (25 / 35 / 55 km/h) | 3 |
| Certification | Full UKCA | – |
| Price | £999.99 | £1,099 |
Verdict: At the top of the range, the gap turns into a chasm. The Kubbi K22 has 2.5 times the motor power, 20 km/h more top speed, a significantly larger battery, and a 120 kg weight capacity that comfortably supports adult riders. It also carries full UKCA certification — and costs £100 less than the Revvi 20". For any serious teen rider, the K22 is the bike to buy.
The Service Gap: What Happens When a Bike Needs a Fix
A kids' electric dirt bike is a mechanical product ridden hard through mud, gravel and back gardens. Parts will eventually need replacing — and this is where the gap between Kubbi and Revvi gets even bigger.
Kubbi stocks every spare part for every model in its UK warehouse in Belfast: motors, batteries, controllers, throttles, brake levers, kickstands, chargers, wheels, plastics — the lot. When a part is needed, it ships from the UK within 24 hours and lands inside 48. There's no dealer middle-man, no waiting on an order from overseas, no "we'll get back to you next week."
That kind of operational backup is rare in this category, and it's the single biggest reason Kubbi ownership ends up cheaper over the long run — even before factoring in the lower up-front price.
FAQs
Is Kubbi better than Revvi?
Spec for spec, yes. Every Kubbi model packs more motor power than the Revvi equivalent, lands at a lower price, and is backed by a full UK spare parts operation.
Are Kubbi and Revvi bikes road legal in the UK?
No — neither brand's bikes are road legal. Kids' electric dirt bikes are for use on private land with the landowner's permission. That applies to every brand in the category.
Are Kubbi bikes safe?
Yes. The K4, K7 Pro and K10 Pro are IPX4 water-resistant, the K22 carries full UKCA certification, and all models feature parental speed limiters and proper braking systems (disc brakes on the K7 Pro and above).
How quickly does Kubbi deliver?
Free standard UK delivery on most models in 3–5 working days, or 48-hour express delivery if ordered before 1pm.
What's the warranty?
Every Kubbi bike ships with a 12-month warranty handled directly by Kubbi — not via a dealer.
Is finance available?
Yes — Kubbi offers 0% finance at checkout on most models.
The Bottom Line
Across every age tier — 3 to 7, 6 to 10, 8 to 14, and 14+ — Kubbi offers a more powerful bike at a lower price than the equivalent Revvi. Add in UKCA certification, a UK warehouse with every spare part on a shelf, and 48-hour UK delivery, and the recommendation writes itself.
For UK parents shopping in 2026, Kubbi is the smart choice.
Pick by age:
🟢 Age 3–7 → Kubbi K4 — £284.99
🟢 Age 6–10 → Kubbi K7 Pro — £384.99
🟢 Age 8–14 → Kubbi K10 Pro — £584.99
🟢 Age 14+ → Kubbi K22 — £999.99