Sparco Racing Seat - QRT REV

I need more information to write an accurate description. Please provide: - Seat dimensions (width, depth, height) - Materials (shell material, padding, cover) - Weight capacity or sizing category - Mounting type or compatibility - Any safety certifications (FIA homologation, etc.) - Color options available Without these specifications, I cannot write a factual product description that follows the requirement to preserve verbatim specs and avoid inventing details.