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Roto Joint


Now available in many of our items!

UMI's new Roto-Joint, short for Rotational Joint, allows 28 degrees of total rotation and unrestricted movement throughout the vehicles suspension. The Roto-Joint is designed to work like a spherical rod end while maintaining streetable qualities of a softer bushing. The Roto-Joint is designed to articulate and prevent suspension bind, and since the installed delrin race does not deflect like softer bushings, there is an improvement in traction and a significant reduction in wheel hop. The construction of the Roto-Joint features a 4140 chrome moly, hard chrome plated spherical ball which rotates in a delrin race. The 4140 chrome moly material and hard chrome plating are designed for extensive wear resistance against hard driving and accumulated miles. The spherical ball rotates in the CNC machined delrin bushing, which is contoured for the spherical ball to allow unrestricted movement as the ball rotates. Delrin is the bushing material of choice due to its high resistance against wear, great tensile strength, and ability to maintain its physical properties. The housing of the Roto-Joint features 4140 chrome moly threads, and a CNC machined bushing holder TIG welded together for the utmost in strength and durability. The UMI Roto-Joint is adjustable and 100% rebuildable. This means if the delrin race would wear the adjuster ring can be tightened using the optional spanner wrench to apply tension to the ball. If the delrin race would ever wear completely it can be replaced easily. The UMI Roto-Joint uses a unique inter locking system that applies pressure to the adjuster ring and eliminates the use of set screws.

  • 100% rebuildable design
  • Reduces suspension bind while not reducing ride quality
  • Delrin race absorbs shock and reduces bushing deflection for improved traction
  • Greaseable unit increases bushing life
  • TIG welded 4140 chrome moly threads for the utmost in strength
  • 28° of total unrestricted movement
  • Built exclusively in UMI Performance’s facility, Made in the USA!

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