21 horsepower
The Yamaha Raptor 250 has about a 17 horsepower motor. However, when you start modifying them they open up quite a bit.
A yamaha TTR250 has 28HP @ 8,500 RPM
47 horsepower
A stock 1980 ET 250 has 23 horsepower.
Stock it would be in the 45-47hp range.
18
If its stock it should have about 8-10 h.p.
between 16 and 17 stock
21 hp
17.00 HP (12.4 kW)) @ 7500 RPM according to manufacturer specs for 1980
The Yamaha RD 250 has a number of impressive features and specifications. It has an air cooled two stroke engine capable of 30 horsepower and 7500 rpm.