Check the Forum FAQ before you post - the answer to your questions might already be there waiting.
0 Members and 1 Guest are viewing this topic.
No. They are not the same. And the 650 boots are directional. One side faces the head, one faces the carbs. You can get them on backwards.
This is what a 550k boot looks like on an ‘82 650 head. The right boot is 550 and the left boot is 650. You can force it on with heat and lube but I would bet it’s almost impossible to get the carbs on all 4 at the same time. Also, the 650 boots have an offset in them and the 550 boots do not so it wouldn’t even line up.