Shift into Peak Performance with Spicer Life Series (SPL) U-Joint. Cold-forged from high-quality steel, Spicer Life Series (SPL) universal Joints deliver the strength and durability that today's performance vehicles demand. SPL U-Joints provide optimal friction reduction and higher temperature resistance. The synthetic thrust washer eliminates friction and end galling, preventing the heat that breaks down grease, while the multi-lip seal keeps that grease in-and contaminants out. It all adds up to all-out protection and a longer life for your driveshaft, and it's why Spicer Life Series (SPL) is the brand people trust.