If you’re a fan of motocross racing, then you know that the Yamaha YZ85 is one of the most popular bikes on the track. Built with an 85cc liquid-cooled two-stroke engine, this bike has plenty of power and speed to get you around the track in record time. But just how fast can this bike go? Let’s take a look!

What is the YZ85 Top Speed?
The Yamaha YZ85 has a top speed of 65 mph (105 km/h). That might not sound like much compared to bigger bikes, but for a small lightweight bike like this one, it’s impressive. The engine is designed to be as efficient as possible, so it can reach its maximum speed without using too much fuel or putting too much strain on the engine parts. Plus, it’s easy to control and maneuver around tight corners and tricky terrain.
It also has great acceleration capabilities – it can reach 30 mph (48 km/h) in just 4 seconds! This makes it perfect for races where you need to launch off the starting line quickly and have enough power to overtake your opponents. It also helps make sure that you stay ahead of any other riders who might be trying to catch up on straightaways.
Added Features
The Yamaha YZ85 also comes with several other features that make it well suited for motocross racing. It has hydraulic disc brakes for reliable stopping power, adjustable suspension for improved handling, and a six-speed transmission for more precise gear shifting when needed. All these features come together to make this bike one of the most reliable and capable machines on the track today.
Everything about the Yamaha YZ85
Engine Performance of the Yamaha YZ85

The Yamaha YZ85 is powered by a liquid-cooled, 85cc 2-stroke engine with reed valve induction. The engine is capable of producing up to 37 horsepower, making it one of the most powerful bikes in its class. It also has a 6-speed manual transmission that allows it to reach its peak performance on all kinds of terrain.
The frame of the Yamaha YZ85 is made out of aluminum and features an adjustable suspension system. The long-travel front forks are adjustable for compression, while the rear shock absorber can be adjusted for rebound and compression damping. This makes it easier to adjust the suspension based on your riding style and terrain type.
Safety Features of the Yamaha YZ85
In addition to its powerful engine and adjustable suspension system, the Yamaha YZ85 also comes with a number of safety features that make it a great choice for young riders. These include dual disc brakes, which provide plenty of stopping power, as well as an electric starter that ensures easy starts even in cold weather conditions. The handlebars are also designed to provide plenty of control when riding over rough terrain or in tight turns.
How to increase the top speed of YZ85
By working on the engine, you can improve its overall performance and increase the top speed of your dirt bike. This includes things like increasing compression, improving air-fuel ratio, changing spark plugs and ignition timing, etc. The most important thing is to make sure that all of these modifications are done properly by a professional technician or mechanic who knows exactly what they’re doing. Improperly done engine work can cause damage to your bike and even accidents if not done correctly!
Aftermarket Parts:

Aftermarket parts refer to any parts you purchase separately from the manufacturer’s original equipment. This includes things like exhaust systems, carburetor kits, high-performance air filters, or other upgrades that can help boost your bike’s performance. These components can be expensive but can yield great results if installed properly. It’s important to research each part before you buy it so that it fits within your budget and is compatible with your model of YZ85.
Gearing:

Lastly, changing the gearing on your bike is another way to modify its performance and increase its top speed. A smaller sprocket (the larger number) will result in higher RPMs but lower overall speed; while a larger sprocket (the smaller number) will give you more torque at lower RPMs but also lower top speeds. Depending on where you ride and what types of terrain you typically encounter, either option may be better for achieving higher speeds on your YZ85.
Tire Pressure Check
The first thing you should do when trying to increase the top speed of your YZ85 is check the tire pressure. If your tires are overinflated, they will create more rolling resistance and reduce your overall speed. On the other hand, underinflated tires will decrease grip and handling, resulting in a slower ride. Make sure that your tires are at the recommended pressure level—you can usually find this information in the owner’s manual—so that they don’t hold you back while on the track.
Gear Ratio Adjustment
A second way to increase your top speed is by adjusting the gear ratio on your bike. A higher gear ratio will allow for faster acceleration but may limit maximum speed due to increased friction between gears. Conversely, a lower gear ratio will provide more torque but may limit acceleration. Experiment with different gear ratios until you find one that gives you both good acceleration and high top speeds.
Air Filter Cleaning

Another way to increase top speed is by cleaning and replacing air filters regularly on your bike’s engine. An air filter helps reduce dust and debris from entering into an engine’s combustion chamber which can cause a loss of power at high speeds due to restricted airflow. If you’ve noticed a decrease in power when revving up past certain RPMs, chances are it’s time for an air filter clean or replacement!
Conclusion:
Whether you’re a seasoned veteran or just getting into motocross racing, the Yamaha YZ85 is an excellent choice for your next race bike. With its powerful 85cc engine and impressive 65 mph top speed, you’ll have plenty of power and acceleration at your disposal when out on the track. Plus, with all its added features such as adjustable suspension, hydraulic disc brakes and a six-speed transmission, you’ll be able to customize your ride exactly how you want it – making sure that nothing stands between you and victory! So if you’re looking for a reliable race bike that won’t let you down no matter what challenge comes your way – check out the Yamaha YZ85 today!