This precision-machined, highly polished aluminum pressure plate won't warp or flex, allowing for smooth, positive clutch response and also adds a custom look to clutches on 1941-1984 Harley-Davidson Big Twin (Knucklehead, Panhead, Shovelhead) stock or open primary drives. Works great with Cycle Standard and assemblies. Replaces H-D OEM # 37871-41. See Additional Information below for fitment.