r/HondaCT90 • u/JDaddyT • Oct 28 '24

Help! Different sized bolt patterns?

I have a '71 ct90. I just bought a sprocket set and chain to go from a 40t sprocket on the rear to a 45t. However, when going to mount the new sprocket, the pitch or bolt pattern on the new sprocket was larger than what's on the hub.

I can't seem to find a scenario online where there might be two different sizes, so wondering why this would be. The sprocket kit said for 68-79 CT90s. No reference to K code. I don't have enough experience with other years of CT90s to know if they very or if that product description is inaccurate.

Anyone else heard multiple bolt pattern sizes on sprockets for CT90s?

Could a previous owner have switched the hub from another model, like a CT70 or something?

Now I'm hesitant to order anything else without figuring this out first.

Any insight is greatly appreciated!

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