125m rear sprocket

[scottyg118]

I need a new rear sprocket. I see Dennis Kirk has a 38, 39 and a 40 tooth. Which one should I get if I can't find a cheap used one?
Scott

[trikes4life]

i would saty with the orgional number of teeth, when you replace the rear if you have the money replace the front sproket and the chain. They ware in a patteren. And it looks good. Front should cost 9 dollars or less.