Cummins12V98 wrote:
For the money IMHO the TrailAir air bag kingpin is a great option. "RATED" at 21k, the TriGlide is great but that option is no linger available. People not understanding there were 9 grease points not 6 probably caused it's demise. I tow 23=-25k on mine full time for 3.5 years now.
Look at the geometry compared to the 5thAirborn.

I had the tri-glide... even went out and got a different extension for the grease gun to make it easier to reach the 3 "hidden" zerks.. Mine still failed.. BUT, Lippert made it right and sent me a Flex Air at no charge..