Allstar Performance Spring Pre-Loader Wrench - Fits Nut 13199903 The lap belt mounts are

The lap belt mounts are sewn in as tested

2" webbing for the cuffs and 1" webbing for the tethers

10 AN Male to 3/8 in NPT Male

2007-2008 Chevrolet Silverado 1500

Allstar Performance Spring Pre-Loader Wrench - Fits Nut 13199903 The lap belt mounts arePre loader allows use of a softer spring rate that is pre loaded at ride height. The pre loaded spring will have less rate increase as the suspension travels. For example, a 150 lb. in. spring can be preloaded to 400 lbs. at ride height, but still only increases at a rate of 150 lb. in. as suspension travels. The entire unit may also be exchanged with another unit with a different rate spring pre installed to allow spring rate changes without