Razor Dirt Rocket MX650
Razor’s biggest electric dirt bike, for older teens and adults up to 220 lb. It has the speed, suspension and brakes the smaller Dirt Rockets lack.
Amazon $749$749
The Razor Dirt Rocket MX650 is the better go-kart or mini bike overall, rated 3.5 to 3.4. The Razor Dirt Rocket MX650 leads on rider weight and top speed. The Razor Dirt Rocket SX500 wins on price. The Razor Dirt Rocket SX500 costs $269.01 less ($479.99 vs $749).
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 SX500
A teen-size electric dirt bike with suspension and disc brakes at both ends. It suits riders 14 and up who want a quiet backyard bike.
Amazon $479.99$479.99
Which should you buy?
- Choose the Razor Dirt Rocket MX650 for rider weight (220 lb maximum rider weight vs 175 lb maximum rider weight) and top speed (17 mph top speed vs 15 mph top speed).
- Choose the Razor Dirt Rocket SX500 for price ($479.99 vs $749).
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 | Razor Dirt Rocket MX650 | Razor Dirt Rocket SX500 |
|---|---|---|
| Overall rating | 3.5/5 | 3.4/5 |
| Price 25% | 12 $749 | 42 $479.99 |
| Top speed 20% | 75 17 mph top speed | 58 15 mph top speed |
| Rider weight 20% | 100 220 lb maximum rider weight | 62 175 lb maximum rider weight |
| Ride and safety 25% | 76 front and rear suspension, disc brakes front and rear | 76 front and rear suspension, disc brakes front and rear |
| Warranty 10% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| Razor Dirt Rocket MX650 | Razor Dirt Rocket SX500 | |
|---|---|---|
| Power | ||
| Type | Dirt bike | Dirt bike |
| Fuel | Electric | Electric |
| Motor | 650 W | - |
| Battery | 36 V sealed lead-acid | 36 V sealed lead-acid |
| Performance | ||
| Top speed | 17 mph | 15 mph |
| Run time | 40 min | 40 min |
| Rider | ||
| Max rider weight | 220 lb | 175 lb |
| Rider age | 16+ | 14+ |
| Chassis | ||
| Brakes | Disc, front and rear | Disc, front and rear |
| Suspension | Front and rear | Front and rear |