For drivers that feel most comfortable using a racing harness in a street car, the Profi II ASM fits the bill. The Profi II ASM is built with ASM technology instead of a anti-sub strap. Using a anti-sub strap on a stock factory seat is almost impossible as the seat was never designed for it (and should not be modified). Schroth's solution is their ASM system, which stands for "Anti Sub-Marining" - a feature built into street harnesses that prevents the occupant from sliding under the lap belt in a crash (submarining).
ASM is an extra few inches of belt that is folded along the inside shoulder belt and hidden under a plastic cover. In a frontal accident the extra belt length is released and allows one side of your body to fall further forward than the other side. This causes your torso to twist, which prevents you from sliding under the lap belt. The ASM is on the right shoulder for a driver and the left shoulder for a passenger (in a LHD vehicle).
This also has the benefit of forcing each occupant away from each other. This belt has all of the features of the full Profi II racing system: light weight rotary buckle, 3" shoulder belts, 2" lap belts with pull-up configuration, and snap-in hardware. An FHR device can be used with this harness but we don't recommend it.
Because it is based on a racing design, some additional work is required for installation - the snap-in buckles require eye-bolts to be securely mounted to the chassis. In most cases you can install them at existing seatbelt anchor points.
An additional benefit to this harness is that if you decide to use a racing seat in the future, a sub-strap can be purchased separately and it clicks right in!
A DOT-compliant buckle is also available.
Note: "Driver" and "Passenger" are listed for Left Hand Drive vehicles.
Looking for more info, tips, or buying advice on race or street harnesses? Click over to our Safety Harness Guide in our Tech section.