BikeHard Carbon Spacers and Top Cap Set 1 1/8" Full CarbonThe BikeHard Spacer Kit and Top Cap set consists of three carbon unidirectional carbon spacers (5mm, 10mm, and 20mm) and a fully carbon top cap. The spacers are internally ribbed and relieved to decrease weight while maintaining the strength necessary to stabilize the structural integrity of your cockpit. The top cap is completely constructed from carbon fiber as well, with a aesthetically pleasing conical top shape and a completely recessed matching bolt. Not including the bolt, 35mm of standard alloy spacers and an alloy top cap weighs in at 35 grams. This kit carbon kit weighs in at an astonishingly low 16 grams. There is no other component upgrade that will as easily and economically halve the weight on a bicycle.817616022186