These TCI U-joints are specifically designed for today's demands in drag racing, off-road, and performance applications. They feature a solid body design, heat-treated forged material construction, and eliminated grease fittings to reduce the chance of structural breakage in the body. TCI U-joints are pre-greased sealed units, pre-packed for life with synthetic Lithium grease to provide extra friction reduction and temperature resistance. The special Teflon® coated nitrile rubber outer seals are designed to reduce failure and leakage like standard U-joints. The bearing surfaces have been precision-ground and finished to allow the U-joint to run true and ensure accurate fit to the transmission yoke. Looking for maximum reliability and durability? Try one of these TCI U-joints to get the job done.