On race day there's some force that pushes you to go faster. You can, thanks to the complete restraint systems from Simpson. We recommend restraints be replaced every two years, no matter how much sweat and champagne it's seen. NASCAR must evaluate the performance characteristics of a manufacturer's driver restraint system using their test procedures and minimum standards before being used in NASCAR competition. These include: Webbing Tests: Determine composition, breaking strength, elongation and abrasion resistance. Hardware Tests: Determine dimensions, radiuses, clearances and identification of the hardware. All restraints have no left side adjuster. Proof Load Testing: Complete belt assembly must pass a minimum body block test of 6, 300 lbs. without failure or slippage of hardware or webbing. The buckle must then release under load within NASCAR's release standards. Maximum Load Testing: Performed on the complete belt assembly using the Body Block Test. Maximum load before webbing or hardware failure must exceed 15, 000 lbs. in order to pass. Simpson has 16 restraint systems approved by NASCAR, more than any other manufacturer. Simpson Performance Products is proud to state that we have not had a failure of any restraint system submitted to NASCAR for approval.Pit Stop USA offers Simpson 6 Point Latch & Link Restraint System - Pull Down, Bolt In - Individual Restraint, Bolt In w/ No Left Side Adjuster 29054SO at low everyday prices. Be sure to check out all of our products from Simpson Race Products including Simpson Race Products 6 Point Latch and Link Restraints.