MX500 Dirt Rocket

The verdict

The MX500 exists to solve a sizing problem, and that is the most useful thing about it.

Razor's Dirt Rocket ladder is defined by rider weight, not by speed or price. The MX350 carries 140 lb. The MX650 carries 220 lb. Between them sits a real gap, and a fourteen-year-old who has outgrown the MX350 but is nowhere near 220 lb has been falling through it. The MX500 is that rung: 175 lb, rated 14+.

It is not the fastest Razor. At 15 mph it is slower than the cheaper MX650's 17 mph. That is not a mistake in the line-up — it is Razor pricing by size and build rather than by top speed.

What Razor actually publishes

Every figure below is from razor.com, checked 2026-09-13.

Two of those deserve attention.

Dual disc brakes and dual suspension at this price is genuinely unusual. Most of the sub-$1,000 shelf runs a single brake, drum brakes, or no suspension at all — our own under $1,000 guide sorts the field on exactly that.

Sealed lead acid, not lithium. This is the trade that funds the rest of the bike. Lead-acid is heavier, slower to charge, and has a shorter useful life than a lithium pack. A Burromax TT350R at $699.95 runs lithium and costs less — but it is rated 12+ and 180 lb, which is a different rider.

The thing Razor does that almost nobody else on this shelf does

It publishes an age rating and a rider weight limit, in the same place, on every model — and the Amazon listing title repeats them.

That sounds like a low bar. It is not. We have found manufacturers whose Amazon title contradicts their own product page on rider weight, listings that give an age with no weight at all, and a $990 bike with no published age rating of any kind. On a machine a child rides, the rating is the most important number on the page, and Razor is the one brand here you can take at face value.

Which Dirt Rocket you actually want

The whole line decides on weight. Speed follows.

Read down the "max rider" column and pick the first one the rider fits under. That is the whole decision, and it is the one no single product listing can make for you because each listing only sells one bike.

Where it falls down

The battery. Lead-acid at this price point is defensible, but it is the first thing you will notice: slower charging, meaningful weight, and a pack that will not take as many cycles as lithium.

No speed modes. The MX125 and MX350 both gate speed by mode, which doubles as an age gate. The MX500 does not — it is on or off at 15 mph. For a fourteen-year-old that is probably fine. It does mean you cannot buy it early and unlock it later.

15 mph is modest. A rider who is 14 and confident may find it slow within a season, and the faster Razor above it is cheaper. If the rider is close to 175 lb anyway, look at the MX650 first.

Who should buy it

A rider between roughly 140 and 175 lb, aged 14 or over, whose parent wants a brand with real parts availability and published ratings they can check. That is a narrow description, and it is exactly the rider the rest of this category ignores.

If the rider is lighter, the MX350 is cheaper and gated by mode. If heavier, the MX650 is the only Razor that carries them. If the budget is the binding constraint rather than the size, our under $1,000 picks put this bike in context against six others.

VoltRipper is independent and spec-verified — we have not ridden this bike. Specifications, age ratings and rider weight limits are quoted from Razor's own product page on the date shown.