I don't imagine the actual E9X production harnesses being much different. I hope the tailstrap is longer. In the pic, the tail strap is adjusted to max length. So these might not work as well if you have short legs and a beer belly or you drive with your chest against the steering wheel.
The ralleye4s aren't vehicle specific like the quick fits either. Schroth advertises that these 4pts have antisumarine technology (ASM)...whatever that is.
After using these for 2 events, I feel the improvement far outweigh the potential risks. Your not beat up and worn out from trying to keep yourself in the seat.
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2018 F30 320iX Melbourne Red
2011 E90 M3 Monte Carlo Blue
2004 E46 M3 Imola Red
2000 E36/7 Z3 Steel Blue
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