Why the RCB R9X 300W Is the Kids’ Electric Dirt Bike We’d Buy for Our Own Children
By the TrailSurge Team | June 2025
Here at TrailSurge.co.uk, we’re more than just bike enthusiasts — we’re parents too. So when we say the RCB R9X 300W Kids Electric Dirt Bike is one of the best starter dirt bikes on the market for young riders, it’s because we’d genuinely feel comfortable putting our own kids on it.
If you’re looking for something that’s equal parts safe, fun, and built to last, keep reading — the R9X might just be the perfect first ride for your little trailblazer.
⚙️ What Makes the RCB R9X Stand Out?
We’ve tested a fair few kids’ electric bikes over the years, and this one hits the sweet spot. Here’s a quick rundown of what it offers:
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300W brushless motor — enough power for real trail fun without going overboard
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Top speed of 25 km/h — but with adjustable speed modes so younger riders can start slow (as low as 8 km/h)
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36V 4Ah lithium battery — gives you around 9–15 km of ride time
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12" off-road tyres — grippy enough for dirt, grass, or gravel
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Front and rear suspension — absorbs bumps and keeps the ride smooth
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Supports up to 65 kg — so it’ll grow with your child
It’s a proper little dirt bike, not just a ride-on toy — and that’s exactly what makes it exciting.
💬 From Our Garage to Yours – Why We Love It
When we first took the RCB R9X out for a spin with one of our staff member’s 8-year-old (shoutout to Max!), we were genuinely impressed by how quickly he adapted to it. The speed limiter switch meant we could set it to “slow mode” until he found his balance. Within a few days, he was zipping around our test track like a pro — safely and with a huge grin on his face.
It’s the kind of bike that builds confidence, rather than just speed.
🔋 Charging & Battery Life – The Honest Truth
The R9X gives a solid 45–60 minutes of ride time, depending on the terrain and rider weight. Charging takes about 3–4 hours, so it’s perfect for afternoon play or weekend trail rides. If your child loves it (and let’s be real — they will), it’s worth picking up a spare battery to swap out for longer fun.
🛠️ Tough Enough for UK Terrain
This thing’s no garage queen — it’s built to ride. Whether it’s the park, your garden, or a dirt path, the pneumatic tyres and suspension system hold up really well. And with an IPX4 water resistance rating, you won’t need to panic over every splash or drizzle.
🎯 Safety First – Because We’re Parents Too
Safety is baked into the design:
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Three speed settings to match age and experience
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Reliable drum brakes at both ends
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Low centre of gravity for stability
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Rubber grips and responsive throttle control
We always recommend full protective gear — helmet, gloves, and pads — which we also stock right here at TrailSurge.co.uk.
🛒 Why Buy from TrailSurge?
There are plenty of places online selling kids’ electric bikes, but here’s what makes us different:
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We hand-pick bikes we genuinely believe in
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Our UK team tests everything we sell
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You get fast, tracked delivery from a UK warehouse
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We offer after-sales support and parts if you need them
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And if you’ve got questions? You can actually speak to a real person