XL Seat Extension Pad for MTC-P ExtremeMTC P Extreme Extension Pad for XL Seats: Expand the fit of your MTC P Extreme for larger racing seats. This supportive foam seat extender cushion fills extra space in wider shells (e. g., the Sabelt GT Pad), helping your MTC P Extreme sit securely and comfortably in place. A simple add on for a snug, stable seating position and seamless integrationwithout compromising your setup.