JTF1901SC is a Lightweight Self-Cleaning sprocket
 
Available sizes: 13, 14, 15, 16
Material: SCM420 Chromoly Steel Alloy
 
Makes this will fit:
Beta
GasGas
Husaberg
Husqvarna 
KTM
Maico
 
Please Check the JT Sprocket Application guide before purchasing:
http://www.jtsprockets.com/catalogue/part/JTF1901SC/