Fits front left or right on the following Kawasaki UTV models: 2005-2016 Mule 610 4x4, 2017-2021 Mule SX 4x4 (including XC editions). Features a 4140 chromoly steel bar for a higher tensile strenth and more durability. Engineered as a direct replacement, fully-assembled, and ready to install. Joints fitted with neoprene CV boots for flexibility and resistance to hot/cold temperatures. Utilizes high-performance moly grease for protection against the environment and to keep vital components lubricated. Replaces OEM # 59266-0039, 59266-0006. Inner splines: 20, Outer splines: 24, Compressed axle length: 577 mm. Warranty: 2 Years (excluding torn boots & use on lifted vehicles). Lift kit voids warranty, parts are not designed to be used on modified suspensions. Fits front left or right on the 2005-2016 Kawasaki Mule 610 4x4 & 2017-2021 Kawasaki Mule SX 4x4 * Features a stronger than OEM chromoly forged steel axle bar * Greased with a moly based grease to provide superior joint lubrication * Fitted with neoprene CV boots for added wear and puncture resistance * inobard CV joint spline count: 20 * outboard CV joint spline count: 24 * Compressed overall axle length: 577 mm * Replaces Kawasaki OEM # 59266-0039, 59266-0006.