New spark plug boots for vintage Honda CT90 motorcycles.
As spark plug boots age, they often wear out as environmental conditions and countless duty cycles conspire to increase the boot's resistance past usable levels. If the spark plug boot on your vintage Honda CT90 is worn out, and it likely is if it's the one the bike came from Japan with, replace it with one of our new CT90 spark plug boots.
Trim away a bit of the old plug wire with very sharp wire cutters to expose fresh copper. Screw the boots onto the wires by pressing firmly while turning the boot on clockwise.
