Description Reviews The EVO QRT competition seat has been redesigned with new improved updates. The EVO QRT is now made with all-new QRT Technology which results in an ultra-light shell. The EVO QRT has been updated from the previous EVO seat with a reduced shoulder bolster dimension that allows fitment into smaller cockpits but can still accommodate a medium size driver. Also the shoulder harness belt openings have been raised to accommodate a taller driver. The EVO QRT series of seats feature the most back angle rake of all Sparco seats for a very comfortable driving position. Available in cloth or vinyl. The EVO QRT is FIA approved. The EVO Series is our most versatile competition seat and is available in four sizes to ensure proper fitment. WHAT IS QRT? Designed and developed at the Sparco OEM Composite Laboratory in Italy, QRT is a patented state-of-the-art technical process, based on aerospace technologies.QRT creates an unparalleled mechanical strength to weight ratio. This innovative production method generates the lightest fiberglass composite seat shells currently on the market; in fact, it guarantees a reduction in total weight of up to 30% compared to traditional production methods. The QRT seats approach the weight of a comparable carbon fiber seat at a lower price point. TECHNOLOGY QRT Ultralight fiberglass composite shell Excellent fitment into small cockpits 4 Sizes: Small through XL Excellent ergonomics Fire retardant fabric Special non-slip fabric FIA approved SIZING EVO S – Small (up to 32” waist)EVO – Medium (up to 34” waist)EVO L – Large (up to 36” waist)EVO XL – X-Large (38” waist) Note: When replacing an aftermarket seat other modifications may be needed. There may be air bag lights after installation requiring resistors if you do not want a light on (air bag system will still work). We try hard to put seats, brackets, and base plates together that work the best with a limited amount of modifications, but there may be other modifications needed to make sure seat belts and sensors work the way they should, so you should be comfortable with potential fabrication and some problem solving for your installation. No Returns.