Yamaha Grizzly 660: Top Speed & Specs

When it comes to buying a mid-level ATV, there are plenty of choices out there. If you’re in the market for a reliable option, the Yamaha Grizzly 660 might be right up your street. 

It’s one of the best ATVs in the market with a perfect blend of performance and affordability. The Grizzly 660 comes with a 656cc V-twin engine, 19” wheels with tires, manual transmission with 2WD/4WD dual-mode shift capability & CVT automatic locking differential. 

The Yamaha Grizzly 660 has been the top-selling side-by-side utility vehicle since its debut in 2001. Boasting an affordable MSRP and targeted to a younger audience, the Grizzly made it possible for more people to own a side-by-side. 

This article offers an in-depth look at the most popular model of side-by-side from Yamaha. We’ll cover everything from history, features, price, performance, pros and cons of owning one, and even what you should look for when buying one. Read on to learn everything you need to know about the Yamaha Grizzly 660.

Yamaha Grizzly 660 Features

The Yamaha Grizzly 660 is a powerful machine that has been designed for professional use. Its rugged design makes it ideal for any job site where heavy duty work is required.

Its high-powered engine delivers maximum torque and power while maintaining low fuel consumption and emissions. The Grizzly 660 comes standard with a 1 year warranty and includes a 5 year parts and labor warranty.


 • Powerful 2 cylinder 6V engine

 • High performance transmission

 • Compact size and lightweight

 • Rugged steel frame and chassis

 • 5 year/100,000 mile warranty

 • Includes a 5 year/100,000 mile warranty

 • Optional accessories including a winch, skid steer attachments, and a trailer hitch

 • Can be equipped with a variety of attachments

 • Engine oil filter included

 • Oil and air filters included

Yamaha Grizzly 660 Specs

The Grizzly 660 features a 4-stroke engine, is fuel efficient and creates very little noise. The Grizzly is capable of reaching a top speed of around 80 MPH, and it only takes around 9 seconds to get there. 

The Grizzly is a great choice for towing a car trailer, hauling some cargo, or taking your hunting or fishing gear to your favorite hunting/fishing spot. It is equipped with a 2-speed transmission that’s manual with a reverse gear. The MP-62 transmission is used on this ATV and it features a centrifugal clutch and a belt drive. 

The Grizzly comes with a CVT automatic locking differential system that is built into the Grizzly’s rear axle.

Top Speed

When it comes to speed, the Grizzly660 is one of the fastest ATVs in its category. Its top speed is 70 mph, which is plenty fast to be fun but not so fast that you need to be an experienced rider to use it safely.

Engine & Transmission

The Grizzly 660 comes with a 656 cc V-twin engine that delivers 31 HP and 22 Nm of torque. The V-twin design is efficient and compact, and it makes the Grizzly a very nimble ATV. The Grizzly is also very fuel efficient, even when used for long distances. 

The engine is a 4-stroke type, and it’s very quiet. The Grizzly is an ideal ATV for city commuters because it’s very quiet and doesn’t create a lot of fumes. It comes equipped with a 2-speed transmission, and the Grizzly’s manual transmission comes with a reverse gear for easy maneuvering in tight spaces. It is also simple to use and very reliable.

Suspension & Brakes

The Grizzly 660 has a single-shock rear suspension that provides a smooth ride and excellent traction. It’s a very well-designed suspension system, and it’s also very easy to maintain. The suspension system is fairly standard, so you can find parts to replace or repair it easily if needed. 

The Grizzly 660 comes with hydraulic disc brakes on both the front and the rear wheels. Hydraulic brakes are very reliable and easy to maintain, especially when compared to other types of brakes. They also have a very long lifespan and can be adjusted for optimum performance.


Lubrication: The oil capacity of the Yamaha Grizzly 660 varies with and without an oil filter change. 2 US quarts/1.9 liters are present at draining. It is 2.2 US quarts/2.3 liters when disassembled, and the oil filter replacement capacity is 2.1 US quarts/2 liters. 

For optimal performance, use Yamalube 4 4-stroke oil or an equivalent motor oil that meets SAE 5W, 10W-30, or 20W-40 standards. 

Additionally, make sure it has an API service classification of at least SJ (manufacturer-recommended API grades of SE, SF, and SG are already out of date) and no anti-friction modifications.


The Yamaha Grizzly 660 is constructed from steel tubing and plastic material.

It features a five-degree caster angle and twenty-six millimeter trail. Both front and rear fenders, hand grips, footrests, front and rear bumpers, dual headlights (mounted on the front fender), a five-watt tail light, twenty-one-watt brake light, LED warning lights (center console), and a wire harness are included.

Design & Features

The Grizzly 660 comes with 19” wheels with tires. The tires are an all-terrain type, so they’re perfect for a wide range of terrains. The wheels are black with a chrome finish, so they look very stylish. The wheels are also wider than on most ATVs, which makes for a very stable ride.

 For convenience, the Grizzly comes with a front bumper. The Grizzly 660 comes with a digital display that is easy to read and shows the ATV’s speed, RPM, fuel level, and other important information. The Grizzly comes with a single-seat design, so you can take only one person with you on the ATV.


The Grizzly 660 is priced at just under $7,000, which is pretty good for a mid-range ATV. You can find similar models for a little cheaper, but you’ll also find a few that are more expensive. 

As we said in the beginning of this article, the Grizzly 660 is a nice blend of performance and affordability, so it’s definitely worth a look if you’re in the market for a mid-range ATV.

Pros and Cons


  • It’s only carburetor produces a ton of power and performs superbly on roads with lots of potholes.
  • It features one of the top ATV 4WD locker switches.
  • Radial tires significantly improve steering.
  • The vehicle is an excellent alternative for both significant carrying and recreational rides because of its overall design.
  • It is convenient to ride on rocky or uneven terrain thanks to its high ground clearance.
  • Due to its comfortable suspension and maneuverability, this motorcycle is perfect for all-day riding.
  • Its belt system is regarded by riders as the best in its class.
  • Since snorkels are placed higher than the majority of ATVs, they are ideal in deep water.
  • The Grizzly is a trustworthy machine because of its respectable power-to-weight ratio.
  • Compared to its competitors, it has a larger aftermarket support network.


  • The Yamaha Grizzly 660’s strength as a work vehicle is diminished by the Yamaha Grizzly’s difficulty finding reverse and IRS squat.
  • Attempting to shift from reverse can inadvertently engage the park position.
  • Its strengths do not include rough barriers or off-camber surfaces.
  • It seems like the rear axle always separates from the rear differential.
  • Leaving it in the garage for a while results in the machine not obtaining any gasoline.
  • Its consumption and fuel mileage are among the poorest in its class (only rectified with the 2014 model upwards).
  • The Grizzly’s cylinders are not Nikasil-coated (which may mean extra expense for mud boggers).
  • The market does not offer the most attractive or alluring aesthetics.
  • It is not recommended for newbie riders.

About Yamaha

Like any good Japanese company, Yamaha has a history that goes back a long way. It dates back to 1887 and was originally known as Yamaha Piano Company. 

That’s when the company started making various kinds of string instruments and organs in Japan. It was not till the early 1950s that it ventured into the motorized world by creating the GY 250 standard motorcycle. 

Twenty years later, it separated from its parent company and became known as Yamaha Motor Co., Ltd with a brand new business plan in tow.


The Yamaha Grizzly 660 is a powerful ATV, which is the perfect vehicle for all those who like to explore the outdoors. It has a powerful engine, which delivers high performance and excellent handling. The Grizzly 660 is not only a great off-road vehicle but it also handles well on-road conditions as well.

The Yamaha Grizzly 660 is an excellent choice for people who want to get into off-road riding without spending a lot of money. It’s affordable and comes with a powerful engine, excellent suspension, and a wide range of features. The Grizzly is a versatile ATV that is suitable for a wide range of uses.

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