Industry News

Simpson’s All New D3 Restraint System, the Ultimate Off Road Harness

D3 Restraint System
D3 Restraint System

New Braunfels, Texas – Simpson is proud to introduce our all new D3 Restraint System. The D3 restraint system is comprised of the highly sought after Simpson Patented D3 Buckle. The D3 Buckle does what no other buckle can by providing 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 emulating the V-Shape of a 5-Point Latch & Link System. The all new D3 Restraint System is composed of many features for your convenience and safety. The shoulder straps have been outfitted with pockets to hold a variety of items including cell phone, IPOD, driver’s license etc. On the front of the pockets is a reflective safety stripe making you more visible to on coming vehicles and when you are stalled out with no power. The shoulder adjusters have looped pull tabs making it easy to loosen the shoulder straps when exiting the vehicle. The system also includes a shoulder strap retainer which keeps the shoulder straps together behind the headrest of the seats.  

System Features:

  • Patented D3 Buckle
  • Cell Phone/ IPOD Pockets
  • Reflective Safety Stripes
  • Looped Adjuster Pull Tabs
  • Anti-Slip Adjusters
  • Shoulder Strap Retainer
  • Polyester Webbing
  • Anti-Submarine Belt
  • Colors: Black, Blue, Red Platinum
  • Starting Price $115.00

Details and information about Simpson Performance Products are available at or by calling 1-800-654-7223.

Since 1959, Simpson Performance Products has been the leading manufacturer of safety equipment for the Motorsports industry. Simpson believes in putting safety first. We are dedicated to elevating the standards of racing safety through continuous development, refinement and testing. The one thing that remains constant is Simpson’s commitment to racer safety.

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