The Yamaha Raptor 660 is a sport ATV that was produced by Yamaha from 2001 to 2005. This ATV is known for its powerful engine and performance-oriented design, making it popular among off-road enthusiasts. The Raptor 660 is Yamaha’s first generation of the Raptor (the second generation being the Raptor 700).
With its aggressive and sporty aesthetics, the Yamaha Raptor 660 commands attention wherever it goes. Furthermore, its low-profile body, wide stance, and sleek lines exuded a sense of speed and athleticism. But it’s not just about looks—the Raptor 660 backs up its appearance with an incredibly capable performance on a variety of terrains.
Yamaha Raptor 660 Specs and Features
- Engine- At the heart of the Raptor 660 lies a liquid-cooled, four-stroke, single-cylinder engine, boasting an impressive displacement of 660cc. This powerhouse is paired with a carbureted fuel system and a five-speed manual transmission to unleash exhilarating bursts of acceleration and high top speeds.
- Performance- Designed to handle the rigors of off-road riding, the Yamaha Raptor 660 features dual A-arm front and rear suspension. These components provide excellent ground clearance, precise handling, and a smooth ride over rough terrains. Ideally, this ATV system is designed for demanding off-road riding while providing good handling and maneuverability.
- Design- The Raptor 660 comes in a sporty and aggressive design, with a low-profile body and a wide stance. Beyond its performance capabilities, the Yamaha Raptor 660 offers a comfortable and ergonomic riding experience. With a wide seat and well-positioned handlebars, riders can enjoy extended adventures without sacrificing comfort or control.
- Brakes and tires- The Raptor 660 comes with dual hydraulic disc brakes on the front and single hydraulic disc on the rear wheels, which offers strong and reliable stopping power. It also features large off-road tires with a knobby tread pattern for enhanced traction on various terrains.
- Accessories- Yamaha offers various accessories and aftermarket parts for the Raptor 660 to allow riders to customize their ATV according to their preferences. These include performance upgrades, protective equipment, storage solutions, and more.
Yamaha Raptor 660 Top Speed
As we have stated, the Yamaha Raptor 660 is a legendary sport ATV, renowned for its impressive top speed that sends adrenaline coursing through the veins of riders. With its powerful engine and performance-oriented design, the Raptor 660 has the capability to reach exhilarating speeds that will leave you breathless.
When unleashed on the open trails, the Raptor 660 showcases its raw power and agility. While the top speed of a Raptor 660 may vary depending on factors such as rider weight, terrain conditions, and modifications, it has been approximated to achieve speeds of up to 70 miles per hour.
This impressive velocity allows riders to experience a thrilling rush of adrenaline as they race across the trails, feeling the wind rush past them. With each twist of the throttle, the Raptor 660 propels forward, effortlessly devouring the terrain as it surges toward its peak speed.
How to Increase Yamaha Raptor 660 Top Speed
While the stock configuration of the ATV already offers a respectable top speed, there are several modifications you can make to enhance its performance and push the limits further. However, it’s important to note that while these upgrades may enhance the ATV’s speed, there are limits to how much the top speed can be increased.
In addition, several factors come into play, including the ATV’s design, engine power, and aerodynamics. That said, here are some steps you can take to help improve the top speed of the ATV;
Raptor 660 performance upgrades
Upgrading components such as the exhaust system, air intake, and engine tuning can potentially improve the ATV’s overall performance, including its top speed. Fine-tuning these components ensures the engine operates at its most efficient and powerful state.
Generally, these modifications optimize airflow and fuel delivery, resulting in increased Raptor 660 horsepower and better throttle response. However, the extent of the speed increase will depend on the specific upgrades and the overall condition of the ATV’s engine.
Gearing changes
Changing the gearing can also help increase the top speed of a Yamaha Raptor 660. The gearing refers to the relationship between the sizes of the sprockets in the ATV’s transmission system. By altering the sprocket sizes or gear ratios, you can modify the ATV’s final drive ratio, which can affect its top speed.
Increasing the rear sprocket size or decreasing the front sprocket size will result in a higher gear ratio. This means that for each revolution of the engine, the rear wheel will rotate more times, translating into increased speed. So, by modifying the gearing, the ATV can achieve higher speeds at the same engine RPM.
However, it’s important to consider the trade-offs when changing the gearing. While a higher top speed may be achievable, it can impact the ATV’s acceleration and low-end power. In addition, the ATV may take longer to reach its top speed, and it may feel less responsive in lower gears. As such it is important to take time to determine the appropriate gearing changes for your specific needs and riding conditions.
Weight reduction
When you reduce the overall weight of the ATV, you improve its power-to-weight ratio. A higher power-to-weight ratio means the ATV can accelerate more quickly and consequently reach higher speeds. Reducing weight can be achieved through various means, such as removing unnecessary accessories, replacing heavy components with lighter ones, or optimizing ATV’s design for weight reduction.
By lightening the ATV, you can also reduce the mass the engine needs to propel, resulting in improved acceleration and speed. However, it is important to keep in mind that while weight reduction can positively impact top speed, there are limits to how much it can influence performance. The effect may also vary depending on factors such as rider weight, terrain conditions, and other modifications made to the ATV.
Removing the speed limiter
A speed limiter is a factory-imposed electronic or mechanical restriction that prevents an ATV from exceeding a certain speed. It is typically implemented for safety reasons to ensure that the ATV remains within safe operating limits.
Removing the speed limiter from your Yamaha Raptor 660 can is a great way of increasing its top speed. In addition, altering the speed limiter allows the engine to rev higher and potentially reach maximum speed level. On average, the Raptor 660 top speed without limiter is approximately 80 miles per hour or even higher.
However, it’s important to note that removing the speed limiter can have safety implications. Increasing the top speed of an ATV beyond its factory-set limits can affect the ATV’s stability, handling, and braking performance. It can also surpass the safe design specifications of the ATV and put the rider at risk. As such, modifying the ATV’s top speed should be approached with caution, and it is essential to prioritize safety and adhere to local laws and regulations.
The Bottom Line
While the production of the Yamaha Raptor 660 has ceased, its impact on the world of sport ATVs remains undeniable. The Yamaha Raptor 660 continues to be cherished by off-road enthusiasts who crave the thrill of its power and top speed. If you’re seeking an ATV that combines adrenaline-pumping performance with rugged durability, the Yamaha Raptor 660 remains an enduring choice, ready to conquer any terrain with unyielding power and precision.
