After a few minor issues with the original 4130 sprocket, Tree Bicycle Co. decided to make a few changes to the design to improve it. The sprocket is made from fully heat-treated 4130 chromoly with bulked up spokes for improved strength with sizes of 25 and 28 tooth for the bolt on version and 25, 28 and 30 tooth options for spline drive, color options of black and raw and a weight of 3.3 oz (bolt / 25t) / 3.0 (spline / 25t).
The 4130 V2 sprocket comes with a lifetime guarantee. You can find out more about the changes Tree made by clicking here.
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