Allstar Performance Spring Pre-Loader - 3" - 14" Tall Spring Frontal Head Restraint Restraint All racing harness sets are

All racing harness sets are designed to be mounted in a race vehicle to a roll cage or harness bar

8 AN Female O-Ring Outlets

No cost recertifications will only be honored on devices that are 4 years older than the manufacturing or recertification date on the SFI label on the device

Male Union Reducer Fitting 8AN to 4AN

The tape does the math for you

Allstar Performance Spring Pre-Loader - 3" - 14" Tall Spring Frontal Head Restraint Restraint All racing harness sets 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