The FE version also features sewn in bendable Bolt-In tabs for the lap belt attachment points, for use in applications where space is limited. Because of the sewn in end fittings, the Flexi lap belt is not available in this harness. It is designed to be used as a four point system.
For this reason it is perfect for use in Driver Education cars or any other application where stock seats are retained. A seat that was not originally desiged for use with a racing restraint should never be modified to accept an sub strap. The Profi II ASM incorporates Schroth's legendary ASM (Anti-SubMarining) technology that is the only thing like it on the market. ASM is an extra fold of material sewn into the right shoulder belt that elongates at a different rate than the outboard belt.This allows your upper torso to twist slightly. On the rebound phase, your torso is planted firmly back in the seat rather than allowed to slide under the lap belt.
You can add a dual sub strap to make this belt into a 6 point at any time. We have tested this harness with a HANS device and the results were great. You can use a 4 point ASM Harness with a HANS device.