Tree 4130 HT Spline-Drive Sprocket Product #458162 MSRP
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Tree 4130 HT Spline-Drive Sprocket
The Tree Heat-Treated Spline Drive chainwheel is made from 4.5mm thick heat-treated chromoly for maximum strength and a center bore compatible with 19mm 48 splined spindles only, eliminating the need for a sprocket bolt. The 8 large triangular cutouts help save weight and offset 3/32" teeth improve chain alignment, reducing wear.