Simpson Patented D3 Off-Road Harnesses

Simpson Patented D3 Off-Road Harnesses

The Simpson Off-Road D3 Restraint buckle does what no other buckle system can. It provides the ease and convenience of a sewn in harness without the shoulder straps being sewn to the lap belt. Its unique patented design eliminates the two shoulder strap links while still allowing the shoulder straps to be joined at the center of the buckle, truly embracing the "V" shape of a 5 point latch and link. FEATURES:

  • Made in the USA
  • Aluminum EZ adjusters
  • Rounded pads for maximum comfort
  • Patented 3-piece D3 buckle
  • Harnesses available with black hardware

NOTE: Not SFI rated.


60 years of safety

Racing and riding is more than what you do, it's a part of who you are. We get it, because it's who we are too. Since 1959, NASCAR, racing enthusiasts and motorcycle riders have trusted Simpson Performance helmets, head and neck restraints, harnesses, racing suits, gloves, shoes, off-road seats, window nets, drag parachutes and more to provide an unparalleled level of comfort, performance and protection.