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Somebody correct me if I am wrong, Stock for the Speedie is 17, for the BA is 18. I have the 16 tooth sprocket for the low end grunt(great if you stop and start alot ie. in traffic). The 19 is great for the highway, it lowers the motor's RPM's while at highway speed.



Early Speedys had a 16t and early Americas had a 17t stock.


Howbeit when He, the Spirit of truth, is come; He will guide you in all truth: