First, what is SFI? The SFI Foundation, Inc. (SFI) is a non-profit organization established to issue and administer standards for the quality assurance of specialty performance and racing equipment. They have served the automotive aftermarket and the motorsports industry since 1978. What do I need to know? Various off-road races and racing bodies have different … Continue reading SFI 16.1 vs 16.5 Harness: Which One Do I Need?