Finding a capable electric dirt bike under $700 used to mean settling for a toy — that's no longer true. Five models on Amazon now clear 15–17 mph on dirt, support riders up to 220 lbs, and ship with actual dual suspension, all well under your ceiling.
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Top Pick
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Versatile
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Budget
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Best Value
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Best for Reliability
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| Product | Razor MX650 Dirt Rocket Electric Motocross Bike | Razor Dirt Rocket SX500 McGrath Electric Motocross Bike | X-PRO 500W 36V Electric Dirt Bike with 14" Pneumatic Tires | Razor MX500 Dirt Rocket Electric Ride-On | Blitzshark 36V 650W Kids Electric Dirt Bike SRK-MC20 Pro |
| Motor | 650W / 36V | 500W / 36V | 500W / 36V hub motor | 500W / 36V | 650W / 36V |
| Max speed | 17 mph | 15 mph | 18.5 mph | 15 mph | 17 mph |
| Ride time | 40 min | 40 min | ~14 miles range | 40 min | 1–2 hrs (dual 9Ah batteries) |
| Weight limit | 220 lbs | 175 lbs | Not specified | 175 lbs | 176 lbs |
| Buy Now | Check Price → | Check Price → | Check Price → | Check Price → | Check Price → |
Quick Tips
Charge the battery fully for 24 hours before your first ride — most lead-acid packs need a conditioning charge to reach full capacity.
Confirm the max rider weight before ordering — most sub-$700 bikes cap at 175–220 lbs, and exceeding it kills motor life fast.
Store the bike with a partial charge (not zero, not full) if it'll sit more than two weeks to prevent battery sulfation.
Start in the lowest speed mode for the first few sessions — you'll learn the throttle response before running at full speed on uneven ground.
Razor MX650 Dirt Rocket Electric Motocross Bike
Best for adult riders who need real weight capacity
Razor MX650 Dirt Rocket Electric Motocross Bike
Best for adult riders who need real weight capacity
What we like
- 220 lb weight limit is the highest in this price range and the only option that genuinely fits most adults.
- Dual suspension — front inverted fork and rear adjustable — absorbs trail chop far better than single-suspension competitors.
- Hand-operated front and rear disc brakes give you real stopping power at 17 mph on loose dirt.
- Authentic dirt bike frame geometry and 16-inch front / 14-inch rear knobby tires deliver confident off-road handling.
What we don't
- 36V lead-acid battery needs 12 hours to recharge, which means one long session and done for the day.
- At around 98 lbs, it's heavy to move around the garage or load into a truck bed.
- The scaled-down frame can feel cramped for riders over 6 feet tall.
Every other bike here tops out at 175–176 lbs — the MX650 takes 220 lbs and still hits 17 mph on packed dirt, which makes it the only honest adult pick under $700. This is the one to buy if you're over 160 lbs and planning real trail sessions.
Skip it if you're under 140 lbs and would rather have a lighter lithium-battery bike with faster recharge.
Razor Dirt Rocket SX500 McGrath Electric Motocross Bike
Best for teens who want dual disc brakes and real MX feel
Razor Dirt Rocket SX500 McGrath Electric Motocross Bike
Best for teens who want dual disc brakes and real MX feel
What we like
- Dual disc brakes front and rear — unusual at this price — give you precise, confidence-inspiring stopping power.
- Double-crown fork and dual suspension handle rutted backyard trails and grassy hills without beating you up.
- Motorcycle-spec front and rear specific tread tires provide better traction than generic knobby tires.
- Authentic Jeremy McGrath graphics and fairing design — it looks like a real MX bike, not a toy.
What we don't
- 175 lb weight cap means most adults are out — this is genuinely a teen and lighter-rider bike.
- Charge time is 12 hours on the stock lead-acid battery.
- 15 mph top speed feels slow once riders get comfortable — there's no upgrade path without replacing the motor.
The SX500 beats the base MX500 in one critical way: dual disc brakes on both wheels, which matter the second you're going downhill on loose dirt at 15 mph. Buy this if you're shopping for a rider 14+ under 175 lbs who wants the most complete hardware package in the $300 range.
If they're approaching 175 lbs or riding technical terrain, step up to the MX650.
X-PRO 500W 36V Electric Dirt Bike with 14" Pneumatic Tires
Best Value
X-PRO 500W 36V Electric Dirt Bike with 14" Pneumatic Tires
What we like
- Lithium 36V/7.8Ah battery recharges in 6 hours — half the wait of lead-acid competitors.
- 18.5 mph top speed is the highest of any lithium-battery bike in this roundup.
- Three speed modes (6/15/18.5 mph) let beginners start safe and work up to full power.
- Front and rear disc brakes and 14-inch off-road pneumatic tires deliver genuine trail capability.
What we don't
- No published max rider weight listed by X-PRO — riders over 160 lbs may see reduced speed and range.
- 14-inch tires are smaller than the 16-inch rubber on the Razor bikes, which reduces stability on loose terrain.
- X-PRO is a smaller brand with less established customer service infrastructure than Razor.
The X-PRO's lithium battery is the key differentiator here — it recharges in 6 hours instead of 12 and holds up better in cold storage than lead-acid packs in the Razor lineup. This is the right buy for a lighter rider (under 160 lbs) who wants the fastest recharge and the highest top speed in this price tier.
Heavier riders or anyone who needs a confirmed weight rating should stick with the Razor MX650.
Razor MX500 Dirt Rocket Electric Motocross Bike
Best value for teens 14+ wanting proven Razor reliability
Razor MX500 Dirt Rocket Electric Motocross Bike
Best value for teens 14+ wanting proven Razor reliability
What we like
- Razor's decades of electric ride-on manufacturing mean parts are widely available and customer support is established.
- Dual suspension — front fork and rear shock — smooths out bumpy trails far better than rigid-frame budget bikes.
- Large 16-inch front and 14-inch rear pneumatic knobby tires handle soft dirt, grass, and light gravel.
- High-torque chain-driven motor is extremely quiet — no noise complaints from the neighbors.
What we don't
- 175 lb max weight means it's a teen and lighter adult bike, not a general adult option.
- Only rear disc brake — the SX500 McGrath adds front disc braking for meaningfully better stopping.
- 8–12 hour charge time on the sealed lead-acid battery makes back-to-back riding sessions impossible.
The MX500 is the entry point into Razor's adult-leaning lineup — the same 500W motor and 36V system as the SX500, but without the dual disc brakes and at a lower price point. Buy this if you're under 175 lbs, want the most affordable Razor dirt bike, and don't need front disc braking.
Choose the SX500 instead if stopping power on descents is a priority.
Blitzshark 36V 650W Kids Electric Dirt Bike SRK-MC20 Pro
Best budget pick with dual batteries and dual disc brakes
Blitzshark 36V 650W Kids Electric Dirt Bike SRK-MC20 Pro
Best budget pick with dual batteries and dual disc brakes
What we like
- Dual 9Ah lead-acid batteries deliver up to 2 hours of runtime — double or triple most competitors in this range.
- 650W motor hits 17 mph and manages moderate climbs better than 500W bikes at similar weight loads.
- Dual disc brakes front and rear offer real stopping confidence at top speed on loose terrain.
- 16-inch rubber tires and dual suspension handle mixed terrain without rattling your teeth out.
What we don't
- 176 lb max weight and 5-foot height recommendation confirm this is sized for teens, not full-grown adults.
- At 87 lbs, it's the heaviest bike in the roundup — loading it solo is a two-person job.
- Blitzshark has a shorter track record than Razor, so long-term durability data is limited.
The Blitzshark wins on runtime — dual 9Ah batteries push the ride time to 1–2 hours when most competitors tap out at 30–40 minutes, which matters a lot for a full afternoon backyard session. This is the pick for a teen under 5 feet tall who'll be riding long sessions and needs every minute of battery they can get.
If the rider is approaching 176 lbs or needs an adult fit, the Razor MX650 is the only real alternative.
What to Look For
Motor wattage is the biggest performance differentiator under $700. A 650W motor handles a heavier adult or steeper terrain where a 500W unit will bog down.
Rider weight capacity matters more than marketing language. A bike rated for 175 lbs at 14 mph is a teen bike — if you're over that, the Razor MX650's 220 lb ceiling is the only realistic adult option here.
Battery type affects both runtime and recharge time. Lead-acid packs are heavier and need 8–12 hours to recharge, while lithium packs on bikes like the X-PRO cut that to 4–6 hours.
Who Should Skip This
Skip this category entirely if you weigh over 220 lbs — no bike under $700 is built for that load on real terrain. Also skip if you need a street-legal bike: every model here is off-road only and cannot be registered or ridden on public roads.
Riders looking for over 20 mph or more than 40 minutes of continuous runtime will need to step up to the $1,000+ tier.
What the Community Actually Uses
On r/electricdirtbikes and r/KidsElectricVehicles, the Razor MX650 comes up constantly as the gold standard for sub-$700 adult riders — specifically praised for the 220 lb weight limit that most competitors can't match. X-PRO gets mentioned as the sleeper pick for riders under 160 lbs who want a lithium battery and faster recharge.
Quick Picks — In Case You've Already Decided
Razor Dirt Rocket SX500 McGrath Electric Motocross Bike
Check Price on AmazonX-PRO 500W 36V Electric Dirt Bike with 14" Pneumatic Tires
Check Price on AmazonFrequently Asked Questions
Can adults actually ride these bikes or are they just for kids?
The Razor MX650 is specifically rated for ages 16+ and up to 220 lbs, making it a genuine adult option. The other bikes here support riders up to 175–176 lbs, which covers most teens and lighter adults.
How long does the battery last on a single charge?
Most lead-acid bikes in this range deliver 30–40 minutes of continuous runtime. The X-PRO's lithium battery provides up to 14 miles of range, which translates to roughly 45–60 minutes at moderate speeds.
Are these bikes street legal?
No — every electric dirt bike in this roundup is designed for off-road use only and cannot be registered or legally ridden on public roads in the US.
Do I need to assemble these when they arrive?
Partial assembly is required on all five models — typically attaching handlebars, a front wheel, and mirrors if included. Most buyers report 30–60 minutes of assembly time with basic tools.
What's the top speed and is it adjustable?
Top speeds range from 15 mph on the MX500 and SX500 to 18.5 mph on the X-PRO and 17 mph on the MX650 and Blitzshark. All five bikes include multiple speed modes so you can start slow and work up.
Buying Guide
You need to match motor size to your weight — a 500W bike handles fine at 140 lbs but drags at 200 lbs on climbs. Battery chemistry matters too: lead-acid is cheaper and heavier while lithium recharges faster.
Check the max rider weight before you click buy, and confirm the tire size fits your terrain.