Sparco Rev QRT Composite Race SeatThe Sparco Rev QRT Composite Race Seat. The Rev is made of a QRT material and is an ultra compact seat with self extinguishing fabric lining, non slip fabric for shoulder and seat restraint, divisible leg rest and seat cushion and M8 fixings with 290mm spacing. FIA 8855 1999 Approved Fibreglass seat Self extinguishing fabric lining Fixed using lateral fastenings with 290mm spacing.