i have dealt with calmini's less than adequete service before and i will never buy an inferior product again. i bought their 4.1to1 t case gears and the 5 1/2 super lift and the calmini 3" springs sagg like my grandmas tits. the gears blew up in 2 hi going like 5mph and yes i replaced every bearing when i installed them. in the couple of times i have called calmini i have been given the run around so i asked to speak to someone who didnt repeat the same programmed answers and got to talk to the head engineer, what a quack, he was allmost to four letter words and kept interupting me when i was calm and cool. they dont warrenty any of their parts even though they say they do, what a shady buisness place, forget them i love trail tough and their friendly service!!! btw i know he was full of it because i am a mechanical engineer myself. humph!!! :-/