JIMS Cylinder Torque Plate Kit — 3.937"–4" bore, black – 18-24 Softail, 17-24 Touring, 17-24 Trike, 17-23 CVO
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SELECT YOUR VEHICLE TO VERIFY THE FITMENT
Required when boring or honing late-model aluminum cylinders; simulates running stress; includes instructions; made in the U.S.A.