How
serious are you about your track time? If you really want to be on the
safe side, you should not only invest in 4 point harnesses but you
should also get yourself a crutch strap. In the unhappy event that you
do crash, your body might tend to slide under the lower strap of your 4
point harness (submarining) which is very dangerous and could be
lethal. Installing and using this crutch strap will prevent you from
beeing a submarining victim.
This product cannot be used on the standard Elise seats! You will need motorsport or equivalent seats for this.