Hiboy DK1
A light lithium dirt bike with suspension and a 5 mph mode, for young kids moving up to their first motorbike. It is outgrown at 140 lb.
Amazon $359.94$359.94
The Hiboy DK1 is the better go-kart or mini bike overall, rated 3.5 to 2.6. The Hiboy DK1 leads on ride and safety, top speed and rider weight. The Razor Dirt Rocket MX125 wins on price. The Razor Dirt Rocket MX125 costs $141.94 less ($218 vs $359.94).
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 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
Which should you buy?
- Choose the Hiboy DK1 for ride and safety (front and rear suspension, disc brake, speed control vs hand brake, speed control), top speed (15.5 mph top speed vs 8 mph top speed) and rider weight (140 lb maximum rider weight vs 110 lb maximum rider weight).
- Choose the Razor Dirt Rocket MX125 for price ($218 vs $359.94).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every electric dirt bikes and quads go-kart or mini bike; a clear win is highlighted. How we rank explains each one.
| Factor weight | Hiboy DK1 | Razor Dirt Rocket MX125 |
|---|---|---|
| Overall rating | 3.5/5 | 2.6/5 |
| Price 25% | 61 $359.94 | 94 $218 |
| Top speed 20% | 62 15.5 mph top speed | 0 8 mph top speed |
| Rider weight 20% | 33 140 lb maximum rider weight | 8 110 lb maximum rider weight |
| Ride and safety 25% | 77 front and rear suspension, disc brake, speed control | 26 hand brake, speed control |
| Warranty 10% | 43 1-year warranty | 0 warranty not published, scored as none |
Specifications
| Hiboy DK1 | Razor Dirt Rocket MX125 | |
|---|---|---|
| Power | ||
| Type | Dirt bike | Dirt bike |
| Fuel | Electric | Electric |
| Motor | 300 W | 100 W |
| Battery | 36 V 5.2 Ah lithium | 12 V sealed lead-acid |
| Battery energy | 187 Wh | - |
| Performance | ||
| Top speed | 15.5 mph | 8 mph |
| Range | 13.7 mi | - |
| Run time | - | 80 min |
| Speed control | Yes | Yes |
| Rider | ||
| Max rider weight | 140 lb | 110 lb |
| Rider age | 3+ | 5+ |
| Chassis | ||
| Brakes | Disc | Hand brake, type not stated |
| Suspension | Front and rear | - |
| Weight | 38 lb | - |
| Warranty | 1 year | - |