Razor Dirt Rocket MX125
Razor’s smallest dirt bike, a first motorbike for ages 5 to about 8. It is cheap and simple, and kids outgrow it quickly.
Amazon $218$218
The Razor Dirt Rocket MX125 rates 2.6 among electric dirt bikes and quads go-kart or mini bikes; the Razor Crazy Cart Sport rates 2.4 among go-karts ones. The Razor Dirt Rocket MX125 costs $161 less ($218 vs $379).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Razor Crazy Cart Sport
#10 in Go-kartsFull review
A kid-size drift cart for driveways and smooth pavement, for ages 9 and up. It costs a fraction of a gas kart.
Amazon $379$379
Scores side by side
These two sit in different type classes (electric dirt bikes and quads and go-karts), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | Razor Dirt Rocket MX125 | Razor Crazy Cart Sport |
|---|---|---|
| Overall rating | 2.6/5 | 2.4/5 |
| Price 25% | 94 $218 | 90 $379 |
| Top speed 20% | 0 8 mph top speed | 15 12 mph top speed |
| Rider weight 20% | 8 110 lb maximum rider weight | 7 140 lb maximum rider weight |
| Ride and safety 25% | 26 hand brake, speed control | 0 none of the listed features |
| Warranty 10% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| Razor Dirt Rocket MX125 | Razor Crazy Cart Sport | |
|---|---|---|
| Power | ||
| Type | Dirt bike | Go-kart |
| Fuel | Electric | Electric |
| Motor | 100 W | 250 W |
| Battery | 12 V sealed lead-acid | 24 V |
| Performance | ||
| Top speed | 8 mph | 12 mph |
| Run time | 80 min | 40 min |
| Speed control | Yes | - |
| Rider | ||
| Max rider weight | 110 lb | 140 lb |
| Rider age | 5+ | 9+ |
| Seats | - | 1 |
| Chassis | ||
| Brakes | Hand brake, type not stated | - |
| Suspension | - | None |
| Weight | - | 55.2 lb |