These Chrome plated end caps add a highlight to the end of your swingarm. Stronger than the OEM stamped steel caps because of a die-cast construction. Work in conjunction with stock axle carriers and even increase the range of adjustment. Fit 1973 thru 1986 4 Speed Big Twin, and 1979 thru 1996 Sportster. Can be used on later Sportster models when the adjuster bolt holes are drilled to 3/8". Sold in sets of 2.