So people are asking about squeaking on the video thread. Polyurethane squeaks when it travels over the metal sleeve when the sleeve isn’t greased since it is not bonded. It should not move around the OD. If it does something is out of round. All of that being said, these new bushings operate completely differently than ours or anyone else’s traditional bushings. The outer part has a fairly high preload and does not move. The harder inner “joint” shifts around in the outer bushing but does not rotate. Poly to poly contact does not squeak. Part of the magic here is that the area between the inner and outer bushing does not require any servicing whatsoever. Because of how the material acts, any silt or mud that gets in there will simply be chewed to dust and spit back out, and just like the rest of our stuff it doesn’t react with water or salt, ect. Like our traditional bushings, the bushing itself is designed to rotate around the metal sleeve. The key difference between this and other bushings is that we worked on a way to seal the grease into the sleeve. The inside surface of the bushing is waffled to capture grease, and the barrel of the inner bushing is slightly longer than the sleeve itself, which will preload the inner bushing, creating a seal. The inner joint moves inside of the softer outer bushing, and since the inner bushing is made of our toughest material it does not distort, keeping that seal pressed firmly against the outer metal of the mounting point. While we have not had a chance to test these for long durations in wet conditions (we are in SoCal), we are pretty confident that water will not make its way into the contact area between the bushing and sleeve, in cycle testing there are never any openings for contamination to get in there.