Fits front left (driver side) on the following Yamaha UTV models: 2006-2009 Rhino 450, 2004-2007 Rhino 660. 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 # 5UG-F510F-20-00, 5KM-2510J-20-00. Compressed length - 613 mm, Inboard spline count - 21, Outboard spline count - 27. 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 (driver side) on the 2006-2009 Yamaha Rhino 450 & 2004-2007 Yamaha Rhino 660 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 * Compressed Length - 613 mm, inobard Spline Count - 21, outboard Spline Count - 27 * Replaces Yamaha OEM # 5UG-F510F-20-00, 5KM-2510J-20-00.