Without any modifications, the Yamaha TT-R90 can reach a top speed of around 40 mph. Many other parameters, such as the rider’s weight, tyre inflation, terrain type, and wind speed and direction, will affect the actual speed.
The single cylinder, 4-stroke engine in the Yamaha TT-R90 has a capacity of 90cc and is air-cooled. From 2000 to 2007, Yamaha produced the TT-R90. The TT-R90 is appropriate for children aged 7 to 10, thanks to its simple electric starter, automatic three-speed clutch, and low seat height. Parents can utilise the throttle stop on the TT-R90 to limit the speed of their children.