What the Razor MX650 is and who it's built for

The Razor MX650 is a full-size electric dirt bike designed for riders 16 and older, with a top speed of 17 mph and a range of roughly 40 minutes per charge on flat terrain. It weighs about 90 pounds, runs on a rechargeable lithium-ion battery, and costs between $600 and $800 depending on the retailer and whether you buy it new or used. Unlike smaller Razor models aimed at younger children, the MX650 has a seat height of 26 inches and a frame built to handle riders up to around 220 pounds.

Razor positions this bike as an entry point to electric off-road riding. It's not a toy — it requires assembly, regular maintenance, and a learning curve if you've never ridden a dirt bike. The motor produces enough torque to climb modest hills and handle unpaved terrain, but it's not designed for serious trail riding or racing. Most owners use it for neighborhood riding, light trail exploration, or as a stepping stone before moving to gas-powered bikes or higher-end electric models.

Key Takeaways

  • The MX650 reaches 17 mph and runs for roughly 40 minutes per charge, making it suitable for casual riding rather than long-distance trips.
  • You'll need to assemble the bike yourself or pay for assembly, and the battery takes 12 hours to fully charge from empty.
  • Maintenance includes checking tire pressure, cleaning the chain, and replacing brake pads — tasks you can learn to do yourself or take to a bike shop.
  • The bike is loud enough to draw attention in quiet neighborhoods and may not be street-legal in all areas, so check local regulations before riding.
  • Used models are common on the secondhand market, but battery condition is hard to verify without a test ride, so buying new or from a seller with return options reduces risk.

Motor, battery, and real-world performance

The MX650 uses a 650-watt electric motor powered by a rechargeable lithium-ion battery. Razor rates the range at 40 minutes of continuous riding on a single charge, but that figure assumes flat terrain and a steady throttle. In practice, range varies widely: riding uphill, carrying a heavier rider, or riding in cold weather all reduce how long the battery lasts. Most owners report 30 to 50 minutes of actual riding time before the battery depletes enough that speed drops noticeably.

The battery takes 12 hours to charge fully from completely empty. Razor sells a standard charger with the bike, and a faster charger is available separately but adds to the cost. The battery is sealed and cannot be user-replaced — when it fails, you either buy a new battery (which costs $200 to $300) or replace the entire bike. Lithium-ion batteries degrade over time, so expect the range to shrink by 10 to 20 percent after two to three years of regular use.

Top speed is 17 mph, which feels faster than it sounds when you're sitting low on the bike. Acceleration is when ready because electric motors deliver full torque from a standstill, unlike gas engines. The bike has a twist-grip throttle on the right handlebar and a hand brake on each side. There is no transmission or clutch — you twist the throttle and go.

Assembly, setup, and what comes in the box

The MX650 arrives partially assembled. You will need to attach the handlebars, install the wheels, connect the battery, and adjust the brakes and seat. Razor includes an Allen wrench set and basic instructions, but the process typically takes 30 minutes to an hour if you're comfortable with tools. If you're not, most bike shops will assemble it for $50 to $100.

The box includes the frame and motor, two wheels with tires already mounted, the battery and charger, handlebars, seat, and a small toolkit. Razor does not include protective gear — you'll need to buy a helmet, gloves, and knee pads separately. The bike also does not come with a lock, so budget for one if you plan to leave it unattended.

Before your first ride, check that the tire pressure is correct (Razor specifies this in the manual), test both brakes to make sure they stop the bike smoothly, and charge the battery fully. The first charge may take longer than 12 hours — some owners report 14 to 16 hours for the initial charge.

Maintenance and repair costs

The MX650 requires less maintenance than a gas dirt bike, but it's not maintenance-free. You'll need to check tire pressure before each ride, clean the chain and sprockets every few weeks, and inspect the brakes regularly. The tires are pneumatic (air-filled) and can puncture, so carrying a repair kit is wise if you ride on rough terrain. Replacement tires cost $40 to $80 each.

Brake pads wear out with use and typically last 6 to 12 months depending on how often you ride and how hard you brake. Replacement pads cost $20 to $40 and can be swapped yourself with basic tools or at a bike shop for $30 to $50 in labor. The chain will stretch over time and may need replacement after 1,000 to 2,000 miles of riding; a new chain costs $30 to $60.

The motor itself is sealed and not user-serviceable. If the motor fails, repair or replacement through Razor typically costs $200 to $400 and requires shipping the bike or the motor to a service center. This is one reason buying from a retailer with a good return policy matters — motor failures are rare but expensive.

Where you can and cannot ride

The MX650 is street-legal in some states and cities but not others. Most places classify it as a motorized vehicle, which means it may be banned from sidewalks, parks, and public trails. Some states require a license plate and registration; others do not. Before you buy, check your local city or county regulations — many municipalities have specific rules about electric bikes and scooters, and the MX650 often falls into that category.

Private property is your safest bet. If you own land or have permission from the owner, you can ride there without worrying about regulations. Many riders use the MX650 on private trails, in backyards, or on rural property. If you want to ride on public land, contact your local parks department or trail authority to ask whether electric dirt bikes are permitted.

The bike is loud — not as loud as a gas dirt bike, but louder than a bicycle or electric scooter. The motor whines at high throttle, and the tires make noise on pavement. Riding early in the morning or late at night in residential areas will draw complaints from neighbors.

New versus used: what to watch for

New MX650 bikes are widely available from retailers like Amazon, Walmart, Target, and specialty bike shops. Prices are fairly consistent across retailers, usually between $600 and $800. Buying new gives you a manufacturer's warranty (typically one year on parts and labor) and the certainty that the battery is in good condition.

Used models are common on Facebook Marketplace, Craigslist, and eBay, often priced $300 to $500. The main risk with used bikes is battery condition — you can't know how many charge cycles the battery has been through or whether it was stored properly. A battery that looks fine may have lost 30 or 40 percent of its capacity. Before buying used, ask the seller how old the bike is, how often it was ridden, and whether the battery still holds a full charge. If possible, test ride it and time how long it runs before the speed drops.

Check the tires for wear and cracks, spin the wheels to make sure they're not bent, and squeeze the brakes to confirm they work smoothly. Look for rust on the frame or motor housing, which suggests the bike was left outside or exposed to water. Ask whether the original charger and manual are included — replacements are available but add to the cost.

Comparison with other entry-level electric dirt bikes

The MX650 competes with a handful of other electric dirt bikes in the same price range. The Razor MX500, an older model, is cheaper ($400 to $500 used) but slower (13 mph) and has a shorter range. The Kuberg Start, a European brand, costs more ($1,200 to $1,500) but offers better build quality and longer range. The Segway Ninebot Dirt eBike is priced similarly to the MX650 but is heavier and designed more for trails than tricks.

If you want to spend less, the MX500 or a used MX650 will save money. If you want to spend more and get a bike that will last longer and handle rougher terrain, the Kuberg Start or a used gas-powered pit bike might be worth the investment. The MX650 sits in the middle — affordable enough for a casual rider to try electric dirt biking without a huge commitment, but capable enough to be fun for a year or two.

Frequently Asked Questions

Can I ride the MX650 on the street?

It depends on your local laws. Most cities classify it as a motorized vehicle and ban it from sidewalks and streets. Check your city or county regulations before riding. Private property is almost always permitted as long as you have the owner's consent.

How long does the battery last before it needs to be replaced?

Lithium-ion batteries typically last two to four years with regular use. You'll notice the range shrinking after the first year or two. When the battery fails, replacement costs $200 to $300, or you can buy a new bike.

Is the MX650 suitable for a beginner?

Yes, if you're 16 or older and weigh under 220 pounds. The bike is stable, straightforward to control, and forgiving of mistakes. Start in an open area like a parking lot or field to get comfortable with the throttle and brakes before riding on uneven terrain.

What's the difference between the MX650 and the MX500?

The MX650 is faster (17 mph versus 13 mph), has a longer range, and a more powerful motor. The MX500 is cheaper and lighter, making it a good choice if you want to spend less or prefer a smaller bike. Both use the same battery type and charging system.

Do I need a helmet and protective gear?

Yes. Even though 17 mph doesn't sound fast, falls happen and injuries are real. Wear a helmet every time you ride, and consider knee pads and gloves. A full-face helmet offers more protection than a half helmet if you're riding on rough terrain.