One thing that was pointed out to me about going for a smaller front sprocket on the 748 / 9**. Not sure if it's true but I was told ..... 9** have a 15 tooth sprocket and a 748 has a 14 tooth sprocket as standard. Dropping a 9** down to 14 tooth is OK, but you can't drop the 748 down to 13 tooth sprocket as the diameter is too small for the chain. |