The origin Stanpart/Leyland TBJ had 32°of articulation. This ensured the joint would not reach its full extension when the suspension was on full droop. Our TBJ has 34° of articulation minimum, and usually 36°, has the correct taper and distance from taper to the centre of the ball ensuring correct suspension geometry, and had the correct ½"UNF thread. It is supplied with a ½" UNF Nyloc nut, Made in the UK.
Please be aware of cheaper TBJ's on the market which have as little as 26° of movement and severely restrict suspension travel and could result in the joint snapping with catastrophic suspension failure. We do keep a second grade of TBJ under part number GSJ131B which has adequate articulation, for standard purposes.

The boot on its own is available under part number 138509 however it should be borne in mind that this is a universal application boot and is not specific to the original TBJ or to any aftermarket TBJ, but is very likely to fit most applications.