The verdict
The Razor MX350 Dirt Rocket (VoltRipper Score 68, ~$299) is the bike that has introduced more kids to electric two-wheelers than anything else — the cheapest and most recognizable electric mini dirt bike there is, and the one most likely to be on a shelf near you — though the one retailer we can currently read lists it as limited rather than freely stocked. That's its whole appeal, and it's a real one: for the price of a video game console, you can put a child on something that genuinely looks and rides like a scaled-down dirt bike.
Just be clear-eyed about what it is. This is a backyard toy, not a junior dirt bike in the STACYC or Greenger sense. A 24V, 250-watt drivetrain, a 14 mph top speed, and a sealed-lead-acid (SLA) battery put it firmly at the entry of the entry level — which is exactly why it scores a 68. For casual fun and testing whether your kid loves riding before you spend real money, it's hard to argue with. For anything more, look one tier up.
Who it's for — and who should skip it
Buy it if you want the least-expensive way to test a child's interest, a simple backyard runabout, or a recognizable first "real bike" feel on a tight budget. Razor's parts and support are everywhere, and at $299 the downside is small.
Skip it if you want a bike that lasts and grows with the rider. The SLA battery, lack of suspension, and short range mean a committed young rider will outgrow it fast — and for not much more money, a lithium-powered bike is a genuinely better experience (see below).
What you actually get
The MX350 runs a 24V / 250W chain-driven motor, a 168 Wh (24V, 7 Ah) SLA battery, and a 14 mph top speed (10 mph in Low Speed mode), in a steel frame at about 70 lb. Braking is a rear drum, there is no suspension, and it uses a simple twist-grip throttle. Razor quotes up to 60 minutes of ride time in Low mode and 30 in High; in real stop-and-go backyard use, plan for ~5 miles of range per charge.
The honest limits: it's an SLA-era design
The MX350's low price comes from old, cheap technology, and it shows:
- The battery is sealed lead-acid, not lithium. That means it's heavy (a big chunk of that 70 lb), it takes a punishing ~12 hours to charge, and its usable life is measured in a couple of seasons of charge cycles, not many. A modern lithium kids' bike charges in a few hours and weighs far less.
- No suspension. Every bump goes straight to the rider — fine on a smooth lawn, jarring anywhere rougher.
- Drum brake. Adequate at 14 mph, but not the confident stopping of the disc brakes on step-up bikes.
- Short range and long charge make for short sessions and long waits — the classic kid's frustration.
None of this makes it a bad toy. It makes it a poor investment if riding turns into a real hobby.
The step-up that's almost always worth it
This is the most useful thing we can tell a parent shopping the MX350: for about $60 more, the Hiboy DK1 (~$359) is a substantially better bike. It's lighter (~38 lb vs 70), runs a lithium battery (charges in ~4.5 hours, not 12), adds full suspension and a disc brake, and goes a bit farther per charge. For a young beginner, the DK1's lower weight alone — easier to pick up, control, and not get pinned under — is worth the difference.
If the rider is older or bigger, Razor's in-family steps up are the MX500 and SX500, rated 14+, and then the Razor MX650 (~$699), rated 16+: 36V, 17 mph, front and rear suspension, and dual disc brakes. For a committed young rider, a purpose-built youth bike rated for their age is the durable long-term answer: the STACYC 20eDRIVE (rated 9–12), the Triumph/OSET TXP-20 (rated 7–10), or at twelve Burromax's TT350R (rated 12+). See our kids guide.
Safety and age
Razor rates the MX350 by speed mode, not with one age: 8+ in Low Speed mode, which holds it to 10 mph, and 13+ in High Speed mode, which unlocks 14 mph. So the switch, not the purchase, is the age gate — set it to Low for a younger rider and leave it there until they are 13. The Low setting sits at the 10 mph ceiling the CPSC sets for 9-to-12-year-olds; High sits just above it. (An earlier version of this review gave a flat 13+, which is the High-mode rating only. Corrected 2026-09-14 against Razor's product page.)
Whatever the bike, the rules don't change: helmet every ride, proper gear, adult supervision, and off-road or private-property use only — like every bike on our board, it's not street-legal (why).
How it compares
| Bike | Price | Top speed | Battery | Suspension / brakes | Score |
|---|---|---|---|---|---|
| Razor MX350 | $299 | 14 mph | 168 Wh SLA | None / drum | 68 |
| Hiboy DK1 | $359 | 15.5 mph | 187 Wh lithium | Full / disc | 79 |
| Razor MX650 | $699 | 17 mph | 432 Wh SLA | Full / dual disc | 73 |
| Burromax TT750R | $995 | 26 mph | 475 Wh lithium | Full / hydraulic | 79 |
Bottom line
The Razor MX350 Dirt Rocket is exactly what it's always been: the cheapest, most accessible on-ramp to electric riding for kids — a fun, recognizable backyard toy at a price that makes the decision easy. It earns its low Score honestly (SLA battery, no suspension, short range), and it's the right buy only if budget or testing-the-waters is the whole goal. The moment riding becomes a real interest, the lithium-powered Hiboy DK1 or a proper youth bike is the better money. Not sure which fits your child's age and size? Our kids guide and the Find Your Ride configurator will match it.
VoltRipper is spec-verified and data-driven — we do not claim hands-on testing of this bike. Specs and prices are cross-checked against the sources listed above and re-verified regularly; real-world figures are our own estimates, clearly labeled.
FAQ
Is the Razor MX350 Dirt Rocket worth it?
As the cheapest way to put a kid on something that looks and rides like a real dirt bike (~$299), it's genuinely fun for casual backyard use. But it's basic — a heavy sealed-lead-acid battery (12-hour charge, ~5-mile range), no suspension, and drum brakes earn it a VoltRipper Score of 68. For about $60 more, the Hiboy DK1 is a meaningfully better bike (lighter, lithium battery, full suspension, disc brakes). Buy the MX350 for pure budget testing; step up if the interest is real.
What age is the Razor MX350 for?
Razor rates it by speed mode, not with a single age: 8+ in Low Speed mode, which caps it at 10 mph, and 13+ in High Speed mode, which unlocks 14 mph. The mode switch is the age gate, not the purchase. The 10 mph Low setting sits at the ceiling the CPSC sets for 9-to-12-year-olds, though note the American Academy of Pediatrics reads that ceiling as ruling out e-bikes below 12 altogether. At ~70 lb it's also fairly heavy for very young riders to manage; the Hiboy DK1, at about 38 lb with a gentler low-speed mode, is the easier bike for the smallest riders.
Razor MX350 vs MX650 — what's the difference?
The MX650 (~$699) steps up to a 36V/650W system, 17 mph, front and rear suspension, and dual disc brakes — built for older or bigger kids. The MX350 (~$299) is the smaller, slower, cheaper 24V entry. Choose the MX350 for a young beginner on a tight budget, the MX650 for a teen ready for a bit more speed and a better chassis.