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Razor

Razor Dirt Rocket SX500 McGrath Electric Motocross Bike for Kids Ages 14+ - 40 mins of Ride Time, For Riders up to 175 lbs

  • Based on 828 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Jun 15
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Features

  • Inspired by the winningest motocross rider in history, Jeremy McGrath
  • Complete with authentic McGrath graphics and fairing design, genuine dirt bike frame geometry and a high-torque, Variable speed motor for a super-charged experience
  • Carries riders at speeds of up to 15 mph with 40 minutes of continuous use
  • Features dual suspension and riser handlebars, large pneumatic knobby tires, retractable kickstand, and hand operated dual disc brakes. Recommended for ages 14 and up; supports riders up to 175 pounds
  • 36V (three 12V) sealed lead acid rechargeable battery system

Description

It's ShowTime! what do you get when you combine the winningest motocross rider in history and the Razor product making machine the all new Jeremy McGrath Sx500! with authentic MX frame geometry and faithful reproduction of Jeremy's big bike, we offer you the perfect product for your little champion! motorcycle-spec tires with front and rear specific tread, disc brakes and dual suspension make this electric ride ready to Rock the dirt. Authentic dirt bike frame geometry and a high-torque, variable speed motor deliver a super-charged experience. Large tires ensure a smooth ride and maximum power transfer for climbing those dirt hills ahead. Reaches speeds up to 15 MPH with 40 minutes of continuous use. Features a variable speed, high Torque, chain driven motor with twist-grip acceleration control and hand operated dual disc brakes, spoked aluminum wheels with 10 x 250 super cross treaded pneumatic tires, dual suspension, adjustable riser handlebars, soft rubber grips, double crown fork, folding metal foot pegs and retractable kickstand. Also includes, steel frame construction with shatter-resistant plastic fairings and 36V (three 12V) sealed lead acid rechargeable battery system with charger. 12 hours recommended battery charge time. The buyer and rider of the Razor Sx500 are responsible for knowing and obeying all local, state and federal regulations regarding the riding and use of all Razor electric vehicles and scooters.

Brand Name: Razor


Sub Brand: razor


Subject Character: Jeremy McGrath


Manufacturer Minimum Age (MONTHS): 196.0


Manufacturer Maximum Age (MONTHS): 1099.0


Age Range Description: Kid,Toddler


Manufacturer Warranty Description: 90 Days


UPC: 845423022297


Manufacturer Part Number: 15128180


Model Number: 15128180


Manufacturer: Razor USA, LLC


Item Type Name: Dirt Bike


Included Components: Razor Dirt Rocket SX500 McGrath Electric Motocross Bike - FFP


Size: One Size


Item Weight: 95.7 Pounds


Item Dimensions L x W x H: 56"L x 36"W x 24.5"H


Weight Capacity Maximum: 175 Pounds


Item Dimensions: 56 x 36 x 24.5 inches


Material Type: Alloy Steel, Metal, Plastic, Rubber


Theme: Bike


Is Assembly Required: Yes


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Jun 15

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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  • Afterpay Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Great first electric dirt bike!
Got it for our small 9 year old boy for Christmas. Its the perfect size for him and he'll have a few really good years with it. Im 143 lbs and I rode it and it went fast. My tall 5' 3" 13 yr old was able to ride it too at full speed. Assembly was really easy. All you have to do is put the handlebar and front wheel on (had my brother do it lol). It DOES NOT feel like a little ride on toy either. Great buy. Will update later if anything changes or not 😊 ... show more
Reviewed in the United States on December 26, 2025 by Thomas
    • Day 1 review: It's awesome!
I read all the reviews here and everywhere else about all the razor electric motorcycles... pretty much a split batch of "best thing I ever bought" and "total crap, run away". Usually in those cases you can either bet on the manufacturer buying positive reviews, or competition buying negative reviews... but there really isn't any competition in this space. Honda shouldn't be threatened... this thing isn't going to beat a 50cc at anything other than noise. So, I was worried, but couldn't help myself from taking a shot on this. It arrived by amazon truck 2 days after ordering, and I carried it directly off the truck. I've read a lot of complaints of these arriving damaged, but mine was perfect. The packaging is great, and I don't see how they could get damaged without severely abusing the package. It did say not to tumble the package and bold "THIS END UP", and it was upside down and then tipped vertically before handing it off to me, so the delivery people aren't following instructions, but no harm done. Assembly is brain-dead simple, even when they give you the instructions for an MX500/650 instead of the SX500 even though the manual says SX500. They also give you more tools than you need. Took no more than 20 minutes. I set it to charge overnight, probably close to 20 hours. The next day everyone rode it for well over an hour, and the low battery light didn't even come on yet, but I figured we should get it back on the charger. about 4 hours later the charger light was green again, so they took it out for over an hour again. 100% ridden on wooden trails by new light riders who weren't opening the throttle to 100% very often. It performed great. I did find a loose bolt on the trail that definitely came off the bike, but I've gone over the entire bike and can't see any missing bolts, so maybe it was just stuck somewhere and came loose. I expect these batteries to go bad eventually, as that is the primary complaint, but I'm assuming people aren't charging them regularly or keeping them in the garage during the winter. I'm excited for everyone to learn how to ride and get comfortable before I upgrade the battery and motor and controller with parts from amazon that will get the top speed to 35 mph with 3 different speed modes. Just 6 years ago I've seen videos where a lithium ion 36v replacement battery cost more than the bike... now they are very affordable, even at 48v. Anyways, I couldn't be happier. I'll post again if anything breaks. ... show more
Reviewed in the United States on May 10, 2021 by M. D. K.
    • Bought for an 8yr old kid
Very good product. I bought for a 8 years old kid and I was afraid to be too big bike. However it’s a perfect size for this age. Speed is not a big concern son can easily manage that. Very easy to assembly and I feel quality in all materials used. I recommend this bike
Reviewed in the United States on December 15, 2025 by Clayton Rodrigues
    • Perfect gift!
Perfect gift for son! My son is 8 but also tall and had the smaller one first. Well worth the money!
Reviewed in the United States on May 29, 2026 by Heather J
    • Great bike
So to start this is a cool bike my son loves it,made his Christmas wis come true. This bike was easy to put together and charge. He road it Christmas morning and had a blast. Then Friday afternoon came and this happened, the sprocket on the rear wheel just spins when the throttle is twisted to go. I looked this up and some people say it's common for these,there is a fix for it but I'm going to reach out to razor first seeing as I just bought this and they should replace the rear wheel at there cost hopefully they do. Other than that it's a cool bike ... show more
Reviewed in the United States on December 27, 2025 by Amazon Customer
    • I received a bad battery, BUT Razor sent me a new one. 5-stars if the original battery works.
I bought this bike for my son's birthday. Assembly was easy and I followed all the battery charging instructions very carefully. I had my wife take it on a short 1 min test run before we gave it to him. I expected somewhere around 40 mins of ride time. He was incredibly excited when we gave it to him. He hopped on, rode for about 2 minutes and then the bike started slowing down. After 3 minutes it wouldn't even move in the grass. The bike had a Razor customer support phone number to call if we had any issues with it. They were easy to get ahold of and diagnosed the issue as bad batteries. She used the bike's serial number to check the manufacture date and was able to tell me that this unit had sat on a shelf for more than a year. The batteries have very specific charging instructions and they do require monthly charging to keep the batteries working at their peak performance. I was given some instructions on sending in my receipt for replacement batteries. I was able to complete that step from my cell phone. I was told the batteries may take up to 2 weeks to get here. They were delivered before the 2 week time period. The new batteries work great. They were a little awkward to install because there are 3 batteries wired together with pretty short cables. Besides the batteries being wired together, the installation is not challenging. It took me about 30 minutes. Moral of the story - If you buy this bike from Amazon, buy it before you need it. Follow the charging instructions and do a full range test before you give it to someone. This bike looks awesome. It's fun to ride. The build quality seems impressive at this price. The decent build makes the bike heavy for a small kid, It's nearly 100 lbs. I bought it for a large and coordinated 5-year-old. I am a little crazy for trusting him with it, but hopefully he's going to have fun with this bike for several years. ... show more
Reviewed in the United States on September 12, 2022 by Kyle
    • Great purchase for my son!
My son loves this little razor. We modified it and it goes pretty fast! One of his most favorite gifts ever! Hubby loves doing all the mods! Update- we are completed with the full mod on this little bike. The bike is perfect and super fun for a boy that loves his e motocross bike!
Reviewed in the United States on January 14, 2026 by Enchanted_Power
    • No warranty without paper copy of warranty card
Update: Replacement quit working after a month and a half. Used under an hour, 2-3 times a week. No accidents, nothing broken, just stopped working and does the clicking thing described in my original post. Original post: It stopped working on the first use after about half an hour. We recharged it overnight, but even on a full charge, it only clicks when the throttle passes each of the two speed levels. I reached out to Razor for a warranty claim, but they won't talk without the warranty number listed on a paper card that shipped with the product and was discarded after assembly. I don't know of any other product that can't be registered online using the serial number, so it went in the trash with the other packaging. Razor will not look up the warranty number using the serial or any other number, and the warranty number is not on the bike; it's only on the paper card. So, there is essentially no warranty without the small paper card. Fortunately, I can and will be exchanging the product through Amazon for the same model. Had this product broken after Amazon's return deadline, I would have no recourse. DON'T LOSE THE PAPER WARRANTY CARD!!! Otherwise, it's a good size for my boys (5 & 8). The 5 year old is one of the taller kids in class, but not the tallest, and he's pretty strong for his age. It's almost too big for him, but he's handling it well and is able to lift it on his own. It's probably exactly right for the 8 year old, and he's about average height. It doesn't go fast enough to frighten either of them (or me watching really), but it's plenty fast enough for them to love it. No faster than they can go on bicycles. However, because it's powered and heavy, they are required to wear a dirt bike helmet, not just a bicycle helmet. It seems well built and sturdy. It has functioning front and rear suspension and disc brakes. And it looks really cool. I've found other reviews and videos about the throttle and/or controller malfunctioning, which appears to cause the exact issue I'm having. From what I can tell, it's a $50 fix if you do it on your own and have the tools. But, I'm pretty shocked that Razor is trying to evade that by requiring a paper card for all warranty claims, using a "warranty number" instead of the serial number, and not printing a number on the bike that could be used to file a claim. I'll definitely hang onto that card when the replacement arrives. ... show more
Reviewed in the United States on January 18, 2022 by Zac

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