Premium Spicer life series excels in performance and life. The journal crosses are cold-formed from high quality steel that is for maximum strength. Ample grease reservoirs in each trunnion assure effective lubrication and are pre-filled with high quality synthetic lithium grease providing superior friction reduction and higher temperature resistance. Spicer life series u-joints use our highest quality, triple-lip seal along with an external seal guard to resist the harshest conditions.