Please allow 2 1/2 weeks or slight longer
Look at Sprocket Kits for a front & rear combination by model number.
SWTCO new countershaft sprockets are a reproduction replacement of the original found on Bultaco's! Chromoly alternative for those who race. Made in America. You get (1) sprocket.
This is chain size 428 or 1/2 inch (European) & 520 or 5/8". Bultaco standard 25mm pinon shaft.