Intense Primer suspension bearing kit for Primer 275, 29, and S models produced from 2020-2022. Includes a combination of black oxide MAX sealed radial bearings and angular contact MAX sealed bearings. Enduro MAX bearings are the best bearing available for suspension pivot applications as they offer 40% greater strength--ideal for low-rotation/high load pivot duties. NOTE: If black oxide bearings are not available, Enduro MAX bearings without the black oxide finish may be substituted.