Yamaha Raptor 90 Top Speed & Complete Overview

The Yamaha Raptor 90 is an all-terrain vehicle made by Yamaha for young riders ages 10 and up. It has safety features that restrict the speed and power for less experienced riders. What is the maximum speed of the Raptor 90? And what factors should you think about before purchasing one? As one of Yamaha’s youth-focused sport ATVs, the Raptor 90 aims to optimize enjoyment for younger riders while including adjustable safeguards that regulate speed and power output for novice users. So what is the top speed of the Raptor 90? And what aspects should you contemplate prior to acquiring one?

In this article, we will go over the following points and review them thoroughly:

  1. Yamaha Raptor 90 Top Speed
  2. The speed limiters and adjusting them
  3. Other ways to increase the top speed
  4. Pros and cons of the model
  5. Specs and key features of the model

Yamaha Raptor 90 Top Speed

Yamaha Raptor 90 Top Speed

The top speed of the Yamaha Raptor 90, which is equipped with a 90 cc single-cylinder engine and a fully automatic CVT transmission, reaches approximately 30 mph.

In the 90cc class, this represents the highest achievable speed for a youth model. However, the Raptor 90 may struggle to keep up with the faster Raptor models like the Raptor 125, Raptor 250, and Raptor 350.

Initially, the Raptor 90 has a default top speed of around 15 mph, but with some adjustments, it can reach the maximum speed of 30 mph. The presence of two different speed limiters contributes to this initial restriction in speed.

Adjusting The Speed Limiter Features

Some owners are unhappy to discover that their new Yamaha Raptor 90 only moves slowly, at speeds up to 15 mph, and may have trouble climbing steep hills. This limited performance is because of two built-in speed regulation safety features typical for similar youth ATV models.

The good news is these speed limiters can be easily modified. Out of the box, a number of owners are frustrated that their Raptor 90 will plod along at up to 15 mph and may have difficulty ascending steep slopes.

This sluggishness stems from two pre-installed safety mechanisms that restrict speed, which are prevalent in comparable youth models.

Thankfully, these limiters are simple to adjust to unleash the Raptor’s full capabilities.

Throttle Limiter

The throttle limiter is designed to restrict the throttle from completely opening, even at the maximum push of the throttle lever. This condition can be modified using the adjustment screw on the back of the throttle box.

By loosening this adjustment screw, owners can enable greater throttle functionality, subsequently enhancing the machine’s speed and power. Conversely, adjusting the screw in the opposite direction can decrease the speed and power.

To perform such adjustment, the locknut which holds the screw in place has to be loosened first, followed by a counterclockwise turn of the adjustment screw.

However, owners should exercise caution and avoid turning the screw out more than 14.5 mm as it is recommended to prevent potential damage to the throttle cable.

Engine Speed Limiter Plate

An engine speed limiter plate is in place that restricts the engine’s power and maximum RPMs. With this metal plate attached, the engine’s limit is at 4900 RPMs. However, detaching it allows the engine to reach a potent 8500 RPMs, essentially multiplying the acceleration rate and peak speed by two.

The placement of this engine speed limiter plate is under the seat inside the plastic CDI Box. To remove it, the two screws adhering to the small metal plate should be loosened then the plate detached. While the owner’s manual proposes tightening these two screws back, a popular opinion among owners is that the exclusion of the screws altogether enhances performance instead.

For young riders starting out, it is advised to initially regulate the throttle limiter screw gradually and let them acclimate to the quad. As they gain experience and decide to remove the speed limiter plate, it is then recommended to tighten the throttle limiter once more and gradually loosen it as riders familiarize themselves with the enhanced speed and power of the machine.

With the throttle limiter properly adjusted and the engine speed limiter plate removed, the Raptor 90 should reach top speeds of 25 to 30 mph and have improved capability to climb steep hills effortlessly.

Increasing The Yamaha Raptor 90 Top Speed

If a top speed of 30 mph does not fully meet your child’s needs for whatever reason, it’s possible to exceed that speed limit once adjustments to the speed limiters have been made.

There are methods to push the top speed beyond the 30 mph threshold:

Increase The Gearing

A common technique for modifying the speed and power in chain-driven machines involves switching the front and/or rear sprockets for those of differing sizes.

For a higher top-end speed, this can be achieved by replacing it with a larger front sprocket and a smaller rear sprocket. There’s a compromise, though, as this adjustment might marginally decrease the Raptor 90’s acceleration rate.

The standard gear arrangement in the Raptor 90 uses a 14-tooth front sprocket and a 38-tooth rear sprocket.

For the sole purpose of enhancing the top-end speed, substituting with a 15-tooth front sprocket and maintaining the original 38-tooth rear sprocket would likely provide the best outcome.

However, there’s an option to acquire several different-sized sprockets and experiment with them to determine which would suit your rider the most.

Add Bigger Tires

The Raptor 90 is furnished with an 18-inch diameter tire in its stock form.

Another method to enhance the top-end speed is to consider an upgrade to larger tires and rims.

Upgrading to a 19 or 20-inch tire should consequently enable your Raptor 90 to exceed the 30 mph mark.

Top Speed Dependent Upon Break-In Period

It is strongly recommended that new owners of a Yamaha Raptor 90 follow the engine break-in period. For the first 15 hours of use, owners should take it easy on their ATV and not try to reach top speed.

During this initial 15 hours of operation, the various engine components wear in and polish themselves to the proper clearances. So it’s important to avoid excessive engine heat buildup.

It means avoiding continuous use above half throttle for the first 8 hours and avoiding continuous use above 3⁄4 throttle from 8 to 15 hours.

While the owner’s manual says to avoid full throttle at all times during break-in, the advertised maximum speed will likely be unachievable in these first 15 hours anyway.

The break-in period allows the engine to properly seat all its components before being pushed to maximize performance and lifespan. Gentle operation early on is key.

Key Specs & Features

Engine & Drivetrain

The Raptor 90 has a 90cc single-cylinder engine. Despite its small size, it packs plenty of power to move young riders and even some young adults across most terrains and up hills.

Fuel delivery is handled by a 22mm carburetor, which is standard for youth ATVs and easier to maintain than the fuel injection on larger Raptors.

The fully automatic CVT transmission makes operation simple for beginners without needing to shift gears.

A reverse gear allows easy turning around on trails and getting unstuck from the mud.

Like all entry-level models, the Raptor 90 is rear-wheel drive only, with a chain transferring power to the back wheels.

The small but mighty 90cc engine provides ample power. The carburetor offers maintenance simplicity.

The automatic transmission and reverse gear maximize ease of use. Overall, the Raptor 90 has the right specs for an introductory youth ATV.

Engine Type 4 Stroke, SOHC
Cylinder Arrangement Single Cylinder
Displacement 90 cc
Engine Cooling Air-Cooled
Fuel Delivery 22 mm Carburetor
Fuel Capacity 1.27 US Gallons
Drive System 2WD, Chain Drive
Transmission Type Fully Automatic CVT, V-Belt

 

Tires & Brakes

The Raptor 90 has 18-inch Duro tires front and rear. Youth ATVs, are quite aggressive, providing excellent stability and grip on pavement or trails.

Like many beginner models, the Raptor 90 uses drum brakes instead of discs. While discs are preferable, drums are adequate for young riders.

The dual front drums are activated by a right-hand lever, while the rear drum uses a left-hand lever.

The knobby Duro tires supply ample traction. The drum brakes, though not ideal, suit the intended age range. Overall, the Raptor 90 has suitable specs for a starter ATV.

The Raptor 90 has a parking brake located on the handlebar.

Front Tires AT 18 x 7-8 (Duro)
Rear Tires AT 18 x 9-8 (Duro)
Front Brake Type Dual Drum
Rear Brake Type Single Drum

Suspension

With a 40.6-inch wheelbase, the Raptor 90 has better stability than other 90cc models thanks to its longer length.

The suspension uses single A-Arm front forks and a rear mono shock swingarm for a smooth ride.

It has 5 inches of travel in the front and 5.7 inches in the rear.

The preload-adjustable shocks front and rear allow riders to customize the settings based on their weight and riding style.

The long wheelbase improves stability. The suspension soaks up bumps and can be tuned for comfort. Overall, the Raptor 90 chassis is designed for stability and comfort on the trail.

Wheelbase 40.6 inches
Ground Clearance 3.9 inches
Front Suspension Single A-Arm
Rear Suspension Monoshock Swingarm
Travel Front – 5 inches, Rear – 5.7 inches

Dimensions

The Raptor 90 has a compact, youth-sized build similar to other 90cc models.

This smaller size allows it to squeeze through tight trails and dense woods, giving young riders off-road capability in various settings.

Weighing just 279 lbs, the Raptor 90 is very nimble and easy to maneuver for riders of all statures.

The small size enables traversing tight trails. The lightweight provides agility. Overall, the Raptor 90’s dimensions suit youth riders.

Length 58.5 inches
Width 40.2 inches
Height 37.6 inches
Curb Weight 279 lbs.

Top Features of Yamaha Raptor 90

The Yamaha Raptor 90 is a compact yet powerful youth ATV that delivers big fun in a small package. Designed for riders ages 10 and up, this sporty quad has several standout features that make it a great introductory ATV.

Powerful 90cc Engine

At the heart of the Raptor 90 is a durable 90cc air-cooled single-cylinder four-stroke engine. This compact powerplant is tuned to deliver excellent low- to mid-range performance, providing strong acceleration and torque. The engine’s four-valve head and 9.3:1 compression ratio help optimize power output. A fully automatic continuously variable transmission (CVT) with reverse comes standard for easy operation.

Low Maintenance Design

Yamaha built the Raptor 90 for hassle-free ownership and reduced maintenance. The air filter features a simple, toolless quick-access design for fast cleaning and replacement. Other maintenance tasks like checking fluid levels are straightforward thanks to easy access. This keeps the Raptor 90 ready to roll with minimal effort.

Suspension and Handling

Despite its small size, the Raptor 90 boasts suspension components similar to full-size ATVs. Up front are preload-adjustable A-arm shocks with 5 inches of travel that provide light steering and a smooth ride. Outback is a swingarm with a five-way preload adjustable shock offering 5.7 inches of wheel travel. Large 22-inch low-pressure tires at both ends further improve the ride quality and handling.

Comfort and Convenience

Several design elements enhance the comfort and convenience of the Raptor 90. The advanced chassis incorporates a 1.7-gallon fuel tank integrated into the bodywork for exceptional capacity. A plush seat and integrated floorboards provide a secure riding position. The Raptor 90 also has a push button starting with a backup Kickstarter. A gated shifter enables easy gear selection.

Raptor Styling and Appeal

While scaled down in size, the Raptor 90 incorporates many styling cues from Yamaha’s larger sport ATVs. The bodywork and fenders are modeled after the Raptor 700R. It rides on lightweight aluminum wheels wearing low-profile Duro tires. Overall, the Raptor 90 has a rugged, sporty look and feel that lives up to the Raptor name.

Pros & Cons

Here are the pros and cons of the Yamaha Raptor 90.

Pros:

  • Electric start button for easy starting
  • Backup Kickstarter underseat
  • Roomy enough for larger kids
  • Reverse gear aids trail maneuvering
  • The styling resembles the popular Raptor 700
  • Automatic transmission, no shifting needed
  • Full floorboards provide good grip
  • Easy maintenance access without tools
  • 6-month Yamaha warranty

Cons:

  • More expensive than some youth models
  • Quickly outgrown due to small size
  • Carburetor can cause idling and bogging issues
  • Drum brakes less effective than discs
  • Non-functional headlights and running lights

Frequently Asked Questions

How much does a Yamaha Raptor 90 cost?

The cost of a Yamaha Raptor 90 is indicated by its Manufacturer’s Suggested Retail Price (MSRP), which is $3,299. This all-terrain vehicle comes with a 6-month limited factory warranty and is suitable for operators as young as 10 years old. It’s expected to be available starting from August 2022.

Can adults ride Raptor 90?

Yes, adults can ride the Raptor 90. The content mentions that both Raptor 90 and Grizzly 90 are recommended for use by riders 10 years and older, with adult supervision. This implies that adults can indeed ride the Raptor 90, but it’s important for them to be accompanied by adult supervision for safety purposes.

What age is the Raptor 90 for?

The Raptor 90 is designed for riders in the youth ATV class, specifically targeting ages 10 and up.

Is a Raptor 90 automatic?

Yes, the Raptor 90 is fully automatic. It features a continuously variable transmission (CVT) which eliminates the need for shifting. This makes it a handy option for all riders, especially entry-level riders who particularly appreciate this automatic feature. Additionally, the Raptor 90 comes equipped with a standard reverse gear that further aids its maneuvering capabilities.

Does the Yamaha Raptor 90 have a reverse?

Yes, the Yamaha Raptor 90 features a fully automatic CVT transmission with reverse. This means that riders can easily maneuver the ATV in reverse without the need for manual shifting or adjustments. The inclusion of reverse adds to the convenience and user-friendly nature of the Raptor 90, especially for younger riders in the youth ATV class.

Conclusion

The  Yamaha Raptor 90 Top speed is approximately 30 mph, owners may initially only reach 15 mph due to two built-in speed limiters that restrict velocity and power on this youth model.

However, with simple tweaks to these speed regulators, young riders can achieve an enjoyable yet safe top speed.

The Raptor 90 can hit 30 mph but starts restricted to 15 mph for safety. Adjusting the limiters allows achieving a proper top speed for young riders.