Originally Posted by Midnightmoon
Thanks for the post. I will be interested in your feedback when you have them for a while.
Road report: Today I put 160 towing miles on my truck and trailer. The SumoSprings are a nice addition to help mitigate sag and bounce in the rear of the truck. In principle theyíre similar to Timbrens but they advertise progressive resistance to settle the ride more smoothly. Iím satisfied with the purchase.