Same essential design as the outstanding S-8 headset but with minor concessions to cost that offer excellent value. The ultra-fastidious touches of the S-8 are replaced with carefully selected quality materials. S-3 plus5 offers 5mm more lower assembly stack height to solve clearence problems between fork and frame on 29'ers. Over-hanging cup cover design, sealed, steel cartridge bearings and crown race (with intergrated rubber seal), CNC'd 6061 cups, neoprene bearing seals, S3: 112g, S3+5: 130g