Dynatrac™ continues to push the limits of innovation in axle assembly technology, with its all-new ProRock 80-IRS® Independent Axle Assembly. This is the evolution of the Pro60-IRS® and complements the ProRock XD60-IFS. The ProRock 80-IRS is designed to exceed the demanding needs of racing, military and commercial applications. It incorporates Dynatrac innovations from the company’s line of ProRock solid axles and the engineering and expertise that Dynatrac team brings to every project. Dynatrac-ProRock80-IRS1 The ProRock 80-IRS packs incredible strength in a lightweight and easy-to-fit assembly, and it is made in the U.S. from all U.S.-made materials. The ProRock 80-IRS starts with the Dynatrac exclusive center section cast from nodular iron. This casting is designed to maximize ground clearance and strength. External mounting points allow the ProRock 80-IRS to be secured in the front or rear of common frame rail or tube chassis designs and narrow output flanges maximize half-shaft lengths to reduce operating angles. The ProRock 80-IRS features a massive 11.25-inch ring gear and 37-spline pinion, as well as 35-spline or optional 40-spline half-shaft flanges. The assembly is available with 934, Series-21 or Series-30 CV shaft interface flanges. Gear ratios ranging from 3.54 and 5.38 are available, and the ProRock 80-IRS will accept all popular open, limited-slip and locking differentials. As the performance of specialty vehicles increases, so do the demands on the axle assemblies. Desert racing and rock crawling events, where massive tires go from air to ground repeatedly under power, shave the teeth off ring-and-pinion assemblies. Heavy armored military vehicles put incredible strain on IRS drive components. Commercial and racing applications simply wear out regular axle assemblies. The Dynatrac ProRock 80-IRS ups the ante in all areas of independent axle assembly strength without increasing weight or bulk. Whether you’re building high-speed desert racer, high-powered rock crawler or a wide variety of armored or specialty commercial vehicles, the Dynatrac ProRock 80-IRS will ensure you get there and back.