What size rear sprocket came on a '78 Garelli Gran Sport?

Dustin Schings /

I saved this bike from a scrappers pickup truck and it is a project, but we are getting there. Since mine is missing, and the sprocket on Treats is not the correct one according to Dana, I was wondering if anyone could tell me the tooth count on a stock one?

I was able to modify the rim to accept a Tomos sprocket, but only had a 28T (stock) sprocket to throw on there. Based on photos I am seeing, I think that is too small.

Thoughts?

Re: What size rear sprocket came on a '78 Garelli Gran Sport?

looks like 32 is stock for noi but theres three different speed versions, 20 25 30, not sure how they restricted the bikes, so 28 not far off, I've used the treats sprocket on noi and vert 2 speeds, not sure whats different about yours, what motor u got?

Re: What size rear sprocket came on a '78 Garelli Gran Sport?

Grand sport is the 2speed?

My noi rally sport has a 32t

My noi super sport xl has a 36t

My vip mini bike has something similar but isnt stamped. Not gonna count it right now.

The only concern you should have is that it will be able to bolt onto your wheel and is something that the bike can handle.

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