Here are the specifications for both ATVs:
2021 Yamaha Raptor 700R:
* Engine: 686cc liquid-cooled four-stroke single-cylinder engine
* Power: 68.6 horsepower @ 9,000 rpm
* Torque: 49.7 pound-feet @ 6,500 rpm
* Top Speed: 89 mph
* 0-60 mph: 4.1 seconds
2021 Yamaha Raptor 660R:
* Engine: 660cc liquid-cooled four-stroke single-cylinder engine
* Power: 48.3 horsepower @ 6,750 rpm
* Torque: 42.7 pound-feet @ 5,250 rpm
* Top Speed: 81 mph
* 0-60 mph: 4.6 seconds
As you can see, the Raptor 700R has a more powerful engine, produces more torque, and has a higher top speed than the Raptor 660R. This makes it the faster of the two ATVs.
