Seller notes

You are purchasing an ATH crank hub for the F8X M2C/M4/M4 all equipped with the S55 engine. Kit includes:1 piece 4 pin crank hub5/32" drill bitdrill guidedrill guide hold down boltOEM crank bolt Design and tolerance based on OEM structure and ANSI sprocket standards. Made from 8620 steel with heat treatment and zinc plating applied post machining . Precision machining performed on a Doosan 5-axis CNC machining center. Highly recommend having a professional install this onto you vehicle. Estimate...

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