NEW O-RING ONLY FOR INSULATOR/ORING TYPE TRX90 CT90 K2 1970-1979 ATC90 READ 223H
 
WORKS WITH CARB INSULATOR NEW ORING TYPE  CT90_70_TO_79 ATC90_READ others_too 48mm_C/C  20.5mm_CENTER (300008)
 
WORKS FOR ALL ST90'S
 
ALL CT110'S
 
ATC90'S IF YOU NEED AN INSOLATOR THIS WILL WORK, BUT IT WILL BE ON THE CARB END, AND NOT THE HEAD END OF THE MANIFOLD
 
This will also work for all stock TRX90s
 
THE STOCK 1970 TO 1977 CT90 INSOLATOR 16211-077-306 IS DISCONTINUED, SO THIS IS WHAT WILL WORK.