BSA B25T TR25T B50 A65 A70 A75 OIF. BSA OIF: B25T - TR25T -B50 - A65 - A70 1971 Onwards model with Taper roller bearings. Bearing number is L M 11910. Genuine NOS Triumph Steering Head Bearings Kit. Excellent see photos UK Made Timken bearings and Spacers (not chinese).