Premium 1948 Spline Drive Combo Cranks are a bossless version of the 1948’s, designed to be used with spline drive chainwheels only. Features 4130 chromoly arms with machined chainwheel interface, a hollow heat-treated chromoly spindle with hollow spindle bolts and a 6 spoke Premium sprocket with 19mm 48 spline centre bore, eliminating the need for a sprocket bolt. RHD/LHD compatible.
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