Heavy duty full-needle style designed for standard to high load performance engines.. 2 bearings used for Twin Cam. 1 bearing used for M8. OEM replacement reference 9215 standard 24018-10 SE upgrade bearing as standard for some 110" models. 06-17(NU)Dyna 07-17(NU)Twin Cam Softail (excl. 110" Twin Cam as noted) 18-23 M8 Softail 07-16(NU)Twin Cam Touring 17-23 M8 Touring