Seat Mount 1-1/4in C- Plates

The Seat Mount 1-1/4in C-Plates from KIRKEY (MPN 99215) are precision-engineered seat brackets designed for racers and enthusiasts who demand reliable, adjustable seating solutions in high-performance vehicles. These mounts provide the structural foundation necessary for securely installing KIRKEY 89 Series Racing Seats in various motorsports applications, including drag racing and circle track racing.

Built to withstand the lateral and longitudinal forces of aggressive driving, these C-plates feature a robust A-frame geometry that distributes seating loads evenly across vehicle frame rails and floor pans. The 1-1/4 inch mount opening accommodates standard seat attachment hardware, while the rigid construction resists flexing and vibration under sustained cornering and braking stress. Weighing only 0.42 lbs per plate, the design balances structural integrity with weight consciousness—critical in competitive racing.

Racers typically purchase these C-plates as a matched pair to support both driver and passenger sides, ensuring balanced seat geometry and symmetrical load distribution throughout the vehicle frame. Their compact footprint (4 x 0.75 x 4.55 inches) allows installation in tight chassis configurations without compromising accessibility. These C-plates are an excellent choice for anyone looking to enhance their racing seat installation with reliable and adjustable mounting solutions.