Alloy USA - Rear Axle Kit For Jeep Wrangler (JK) 07-10, Dana 44 Grande 30-Spline Kit Alloy USA uses high strength 4140 Chromoly in all its Jeep® axles. Our axles are heat-treated twice and induction hardened to produce these heavy-duty axles that are up to 35% stronger than stock 1040 axles. Alloy USA™ uses the latest cold spline rolling technology, to produce splines that are stronger than traditional cut splines. Our shafts are covered by an exclusive 10-year warranty! Rear axle shaft kits include everything you need for your installation: both passenger and drive side shafts, seals, bearings and wheel studs.

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