What is the Biggest Dirt Bike? (Also most powerful!)

Are you looking for the biggest dirt bike that money can get? Or are you just curious to see the top speed that a dirt bike’s engine can reach?

Suzuki RM-Z450 is the biggest stock dirt bike. The dirt bike measures 49.6 inch in height, 32.9 inch in width, and 85.6 inch in length. The dirt bike is so big that it’s only recommended for experienced riders. If you are looking for the biggest cc dirt bike, then you don’t need to look any further than the MAICO 700, which is fueled by a fierce 685cc engine. The engine delivers up to 82 horsepower. This is super impressive when considering that the MAICO 700 weighs in at only at 240 pounds (110 kgs).

Want to learn more about the dimensions of the Suzuki RM-Z450 and how it fares against other big dirt bikes? Or are you curious to see the performances that the legendary MAICO 700 and its 685cc engine offer? Keep reading because I’ll explain everything.

infographic showing the biggest Dirt Bike

What is the Biggest Dirt Bike (Size)?

 a black and yellow Suzuki RM-Z450

In terms of dimensions, the Suzuki RM-Z450 is the biggest dirt bike in the world. The Suzuki RM-Z450 features the following dimensions: 49.6 inch in height, 32.9 inch in width, and a whopping 85.6 inch in length. I also want to mention that the Suzuki RM-Z450 is fueled by a 449cc 4-stroke engine and that it has a starting price of $8,999.

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Some other specifications that might interest you are a great throttle response that delivers high peak power, an improved traction management system to make it easier for the bike to hook up, and Bridgestone X30 tires that offer excellent grip. Since this is a Suzuki we are talking about, it shouldn’t come as a surprise that the dirt bike features a cool-looking design that looks aggressive. Due to the large dimensions, I don’t recommend the Suzuki RM-Z450 as a good choice for someone who is new to off-road adventures.

Talking about buying dirt bikes, I wrote a full guide that shows how to determine high mileage when buying a used dirt bike.

What is the Biggest CC Dirt Bike?

Maico 700 dirt bike

The MAICO 700 2-stroke is hands down, the biggest cc dirt bike ever made. The dirt bike was developed by Frank White of ATK and it uses a massive 2-stroke engine that is powerful enough to be used on a car. This also makes the MAICO 700 the biggest 2 stroke dirt bike in the world. What makes the engine stand out, other than its 685cc, it’s the fact that it delivers 82 horsepower. This is super impressive for a dirt bike. To make things even better, the engine is paired with a 5-speed transmission system so that the rider can control the power output.

Since the MAICO 700 is the biggest dirt bike in terms of engine, let’s go ahead and also take a look at the measurements that it offers. The dirt bike has a seat height of 37.2 inch, a wheelbase of 58.5 inch, a ground clearance of 14 inches, and a fuel capacity of 1.6 gallons. Since the MAICO 700 comes with a massive 686cc engine, this also makes it the highest cc dirt bike you can get. Of course, this is considering only stock dirt bikes. Some people have modified their dirt bikes up to 800cc, but they are not road legal or safe to ride.

Below you can find a YouTube video that shows off just how fierce the dirt bike sounds.

If you are thinking about buying or renting out the MAICO 700, I have some bad news to share. The dirt bike is no longer being manufactured. On the bright side of things, the Kawasaki KLR is a great choice. The bike ships with a 4-stroke 650cc engine that reaches 98 MPH. In addition, the starting price for the dirt bike is $6,499.

Final Words

If you are looking for the biggest dirt bike, then you can’t go wrong with the Suzuki RM-Z450. If you are interested in the biggest cc 2-stroke dirt bike, the MAICO 700 with its 650cc engine is exactly what you need. Sadly, the dirt bike is no longer available for purchase, and if you want to get something similar, you will have to go with the Kawasaki KLR 4-stroke 650cc.

Bob Kelly

Hey there, my name is Bob and I've been riding ATVs, dirt bikes, and UTVs for most of my life. Going on outdoor adventures has always been my passion. I love sharing tips and tricks with beginners who are getting ready to join the world of outdoor enthusiasts. You can reach me at bobtheatvguy@gmail.com if you want to get in touch.