Take your axle to the absolute highest level of torque capacity with RCV! The same technology employed in RCV's Dana 60's high strength competition series joints goes into every set. Billet chromoly CV joints replace the old school u-joints combined with chromoly inner axles deliver more power to he ground. No more busted joints, egged yoke ears, or knuckle binding with this set-up. U.S. PATENTED High durometer spherical seals keep all the nasty stuff out and can take more abuse than any traditional CV boot. Set includes 27 spline inner axles for stock Jeep TJ width housings. Custom widths available. Comes with RCV's “You break it and we’ll replace it” warranty.