Dura-Bond Bearing Company is a world leader in camshaft bearings, powder metal valve seats, valve spring shims and other engine hardware. Whether you need economical cam bearings for your street rebuild or high-strength, low-fatigue bearings for your race car, Dura-Bond delivers!  Shop Summit Racing for a full line of Dura-Bond bearings and hardware, including coated and non-coated cam bearings, hardware kits, distributor tower shaft bushings, head dowels, valve spring booster shims, and more.