All "real" hydraulic bumps will compress easily on slow speed stuff and will not effect articulation. With no nitrogen pressure you can kinda feel how the valving works by hand, just push down on them and you can feel the oil pushing around the shim stack. I have ran many brands and types of bumps over the years, including timbren, lightracing, and traditional hydraulic bumps from king, fox, and radflo. Timbrens are just rubber springs, and by increasing the spring rate on hard hits causes a lot of bouncing. They are great for street/pulling a heavy trailer, not great offroad. The lightracing jounce shocks were amazing while they worked, however they are nearly impossible to rebuild at home and only lasted me about a year before puking oil out. I sent them off for a rebuild and sold them for Radflo's. Those have been on my taco for almost five years, probably 30K dirt miles. No leaks or issues at all. Once a year, I pull them off, clean them, have a look at the oil, reassemble, charge to 130psi and forget about them for another year. The wear pad on the contact foot needs replaced, other than that they work as well as the day they were installed. I wonder if the 4runner kit from Icon would work for us?
I have the LX570 and I was wondering if anyone has developed these for that rig? We have the rubber factory cone and the small rectangle rubber block for when the axle hits (to the left in the pic but smaller). It has very soft springs and I end up on the rubber bumps a lot. I'd love to have a smoother bottom out with the factory suspension.