Tech Articles

A quick-release, 3-inch shoulder harness meeting SFI Spec 16.1 is
mandatory in all cars in competition required by the rules to have a
roll bar or a roll cage. (Permitted in all other classes.) Driver
restraint system must be clearly labeled as meeting SFI Spec 16.1
and be dated by manufacturer. System must be updated at two-
year intervals from date of manufacture. All seat belt and shoulder
harness hardware must be originally designed to be used with
each other and produced by the same manufacturer. For harness
installation, see illustration. Cars using OEM or OEM-type seat
may route crotch strap in front of seat instead of through seat. Only
units that release all five attachment points in one motion are per-
mitted. When arm restraints are worn with a restraint system that
utilizes a "latch lever," a protective cover must be installed to pre-
vent arm restraint from accidentally releasing the latch lever.
Protective cover not required if system utilizes "duck-bill" latch
hardware. All harness sections must be mounted to the frame,
crossmember, or reinforced mounting, and installed to limit driver's
body travel both upward and forward. Seat belts may not be wrapped around lower frame rails. Under no circumstances are
bolts inserted through belt webbing permitted for mounting. Check
manufacturer's instructions.