JT Steel Sprockets are the OEM quality choice, manufactured using only the finest grade of C49 high carbon steel for the rear sprockets, and SCM420 chromoly steel alloy for the front sprockets.
Fits:

15 Teeth
Suzuki Off Road
TM250 J/K/L/M 72-75

Suzuki Road
TS250 B,C,N,T,X 77-81
TS250 A,B,C 75-79
GSX400 R,RC,R2 (GSX-R400)GK71B85
RG400 EW HK31A87