This inner clutch ring sits inside the clutch pack assembly of a grain harvester's drive system. It transmits torque between the friction discs and the hub, engaging the drive when the clutch is actuated. Wear on the ring's contact face reduces clamping force, leading to slip under load and uneven power delivery to downstream components. The ring is machined to match the original stack height and inner profile, so no shimming or spacer adjustment is needed during replacement. On reinstall, ensure the friction discs are free of oil and the retaining snap ring is fully seated.