Differential Ramp Cup RH

The Differential Ramp Cup RH is a hardened steel component inside the limited slip differential that creates the locking action. This cup features angled ramp surfaces that work with clutch plates to limit slip between the two rear wheels.

When one wheel tries to spin faster than the other (like in a corner or on slippery surfaces), the ramp angles force the clutch plates together, locking the differential and transferring power to both wheels. The ramp angle determines how aggressively the diff locks—the Rush SR uses a specific angle for balanced on-power and off-power characteristics.

This is an OEM replacement part that comes standard with the Rush SR differential. Sold individually (right side shown, left also available).