Shop › Clutch Quadrant Remanufactured - Merkur XR4Ti / Sierra Cosworth Clutch Quadrant Remanufactured - Merkur XR4Ti / Sierra Cosworth $60.00 Remanufactured Clutch Quadrant. Over time the teeth break off causing the clutch to become inoperative. Remanufactured Clutch Quadrant. Over time the teeth break off causing the clutch to become inoperative. Add To Cart Added!