The RCV Performance Ultimate CV Axles for Jeep JL Dana 30 provide unmatched strength and smoothness you can feel. The RCVs simply replace your OEM Jeep JL axle shafts with a high-strength constant velocity design. Our CVs eliminate oscillation and "crow hop" caused by the uneven power delivery of a u-joint axle. The RCV CVs provide 6 points of fully-engaged contact throughout any angle up to 45 degrees, providing 100% strength even when the steering is turned to lock. Ultimate Dana 30 Axle CV Set for Jeep Wrangler JL - w/FAD The RCV Performance Ultimate CV Axles for Jeep JL Dana 30 provide unmatched strength and smoothness you can feel. The RCVs simply replace your OEM Jeep JL axle shafts with a high-strength constant velocity design. Our CVs eliminate oscillation and "crow hop" caused by the uneven power delivery of a u-joint axle. The RCV CVs provide 6 points of fully-engaged contact throughout any angle up to 45 degrees, providing 100% strength even when the steering is turned to lock. The RCV Jeep JL CV for Dana 30 is 18% larger than our previous Dana 30 design and uses our same Dana 60 architecture. Tests prove our axles to be twice as strong as OEM. Even with big tires and big power there are no worries. RCV Performance Ultimate CV Axles are low maintenance and operate with a smoothness you can feel - whether off-road or on the street. All backed with a Lifetime Warranty against breakage up to a 37" tire. RCV axles are a direct OEM replacement, retaining the Jeep's "Front Axle Disconnect" module and retains full functionality of the FAD system. No warning lights, and no further modifications needed. Additional Information We launched this new 18% larger CV specifically for the Jeep JL Rubicon Axles outboards are gun-drilled with a grease fitting at the end for easy maintenance when needed. No need to remove any parts (but a center cap on the wheel) We offer two versions - the FAD 2-pc version and a FAD eliminator 1-pc version. Both versions retain the FAD module. No warning lights, no issues. Coupler utilizes upgraded aircraft grade materials RCV FAD kits use a new bronze bushing, replacing the OEM plastic. Axle set includes right and left CV axle shafts, outer stubs, SST seals and installation tool, installation instructions, synthetic moly grease, and installation hardware. Black oxide coating is standard. Optional nickel plating is available for extra corrosion resistance in salty environments - contact us for details