What’s the difference between trail bushings and mtx bushingsGreat folks over at Ulmers with great support nothing but good to say about them. You do get what you pay for though as for the UP bushman kits $130.00 for trail versions and $135.00 for MTX. The reuse of stock ski bolt and nut is all that's needed all other hardware is replaced with stainless steel. Advantage with these kits is if spindle is ovaled real bad you can JB Weld solid bushing in or use other bonding agents. Still way cheaper than one spindle at $195.00 just to happen again with stock bushing junk good luck.