The verdict
The Razor MX650 Dirt Rocket is how a lot of people first ride something that looks like a dirt bike — it's cheap (~$649), everywhere (Walmart, Target, Amazon), and genuinely fun. But be clear about what it is: a toy-grade electric ride-on for teens, not a real electric dirt bike. It runs a 650W motor, a lead-acid battery, and tops out at 17 mph, and it earns a VoltRipper Score of 49/100 — low on our absolute scale by design, because it's competing on a list that tops out at $13,000 race machines. Judge it as affordable teen fun and it's a fine little bike; judge it as a Sur-Ron and it isn't remotely close.
First, the reality check on the score
Our VoltRipper Score rates every bike on one absolute scale, from this $649 Razor to a Stark Varg. A simple lead-acid ride-on is always going to sit near the bottom — that's expected, not an insult. Read the MX650's 49 as: a capable, affordable entry ride-on, not a performance machine. Compare it to other cheap ride-ons, not to a real e-moto.
What it actually is
The MX650 is a genuine ride-on electric motocross bike built to a budget. It has a high-torque 650W chain-driven motor, a 36V sealed lead-acid battery (good for about 40 minutes / 10 miles per charge), 16″/14″ pneumatic knobby tires, dual suspension, adjustable riser bars, and a UL2272-certified electrical system. It's rated for ages 16+ and up to 220 lb — which surprises people: despite the "dirt bike" styling, it's sized for teens and light adults, not young children.
The caveats (what "toy-grade" means)
- Lead-acid battery. Heavy, with a shorter lifespan and less punch than lithium; expect ~40 minutes of ride time and slow charging.
- 17 mph and simple. Fine for casual yard/trail fun, but it's slow and basic next to a real e-moto.
- Not for young kids. The 16+ / 220 lb rating means it's a teen bike; the smaller MX350 is the option for younger riders (below).
- A fun bike, not a progression bike. It teaches throttle basics, but a serious young rider will want a real youth bike, not more Razor.
MX350 vs MX650 — pick by rider
Razor's Dirt Rocket line has two main sizes, and the difference matters:
- Razor MX350 (~$249): smaller and slower — 24V, ~14 mph, ages 13+, up to 140 lb. The budget entry for a younger/lighter teen.
- MX650 (this review) (~$649): bigger and faster — 36V, ~17 mph, ages 16+, up to 220 lb. For older, heavier teens (and light adults).
Match the bike to the rider's age and weight — an MX650 is too much bike for a small kid, and an MX350 is quickly outgrown by a teenager.
Why it scores 49
- What it does well: cheap, widely available, real pneumatic tires and suspension, and a UL-certified system — a legitimate affordable ride-on.
- What holds it back: a lead-acid battery, 17 mph, and toy-grade construction sit at the bottom of an absolute scale built for full-size e-motos.
- The score is honest: it's a good cheap ride-on, and the 49 says exactly that — not a real dirt bike, not pretending to be.
Who it's for — and who should step up
Buy it if you want inexpensive, widely-available fun for a teen, and you understand it's an entry ride-on, not a performance bike.
Step up if you have a serious young rider — a STACYC 20eDRIVE teaches real skills, and a Greenger G2 is an actual youth MX bike — or an adult who wants a real e-moto, in which case nothing Razor makes will satisfy.
The bottom line
The Razor MX650 Dirt Rocket is exactly what it should be: cheap, fun, and everywhere, a fine first taste of electric off-road for a teen. Its 49 Score just places it honestly — a good budget ride-on, not a real dirt bike. Buy it for affordable fun and set expectations accordingly; step up to a STACYC, a Greenger, or a full e-moto when the rider is ready for the real thing. Sizing a bike to a rider? Our kids guide sorts it by age.
VoltRipper is spec-verified and data-driven — we do not claim hands-on testing of this bike. Specs and prices are cross-checked against Razor and major retailers; where a manufacturer figure is unclear, we don't inflate it.