^^ Yip, larger rear sprocket is easier on the chain, it also reduces the the wheel base slightly, so i dropped my forks through the the triple clamp by 5mm more. A-14 tooth sprocket pulls the chain around a tight arc which speeds up wear. 15 tooth is still a small sprocket, i always go larger on the rear. (like women do with age)
I bought the 42 when I was changing out the chain and sprockets and the chain came two links longer to compensate.
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