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The Yukon USA chromoly axle kit for 1979–1987 GM truck and Blazer front applications fits GM 8.5" front differentials and uses 28-spline inner shafts. Constructed from 4340 chrome-moly with advanced heat-treating, the kit includes matched inner and outer shafts and supplies 1310 Series u-joints for direct replacement of factory front axles.
USA Standard 4340CM Axle Kit For 79-87 GM Truck & Blazer / GM 8.5in / 28Spline w/Spicer Joints
