Like my prior TT's, at some point I upgraded my suspensions with the Dexter HD Upgrade Kit due to the fact that I keep my TT's 8-plus years and put a lot of miles on them. Also, most OEM suspensions don't come with the ability to lube the leaf spring and equalizer connection points.
For my 24RBS I purchased the Dexter HD Suspension Kit #K71-359-00 for my Lippert (LCI) 3,500lb rated axles. Yes, some of the Dexter Axle products are compatible with Lippert axles.
The Dexter HD Kit consists of the hardware shown in the following photo:
Purchased from: https://www.etrailer.com/Trailer-Lea...71-359-00.html
It's difficult to see, but the two new equalizers each have a zert fitting mounted at the the top above the bolted connection bushing hole.
I have installed these HD upgrade kits before, but this time I elected to have "Big Tex Trailer World" of Whitmore Lake, Michigan,
to install the kit. This particular 'Big Tex' facility services RV's when it comes to tasks associated with frames, hitch coupler replacement, axles, suspension repair/replacement, brake systems & wiring, wheel bearings, and exterior lighting. Big Tex doesn't sell RV's.
I would highly recommend this particular 'Big Tex' location (along US 23) for specific RV service needs like previously identified. I called on a Thursday to schedule my service appointment, dropped my TT off the following Wednesday morning, and picked-up my finished TT the next day. Great staff and experienced service tech's.
Big Tex recommended location: https://www.bigtextrailerworld.com/w...nce_management
My TT is four years old (delivered 10/2017) and at least 25,000 traveled miles. Upon removal of the OEM plastic bushings and steel shackles there were visible signs of wear taking place.
Plastic bushing removed (worst case) from top bolted connection bushing hole of OEM equalizer:
Typical OEM shackle with visible signs of hole-elongation in process: