40 Tooth Sprocket. 40/41 chain. 5-1/4" bolt circle.
![](https://www.mfgsupply.com/media/catalog/product/cache/c577c548298eaf468c25d687bd77755b/a/z/az2166-40-234_1.jpg)
40 Tooth Sprocket. 40/41 chain. 5-1/4" bolt circle.
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