Full stainless steel bearings (replacable) Split crown race Common parts throughout the range All parts available as spares and fully rebuildable Steel head doc bolt on the 1.5" step down Total stack height: 13mm To run alongside the conventional 1 1/8 threadless headset The bearings themselves are STAINLESS STEEL and are replaceable The cups, taper ring and crown race (which is now split for easy installation and removal) are all machined aluminium Sealing is achieved through an adjustable taper ring cover and integrated rubber seal The bearings also incorporate their own sealing and being made from stainless steel resist corrosion and its by-products much better than a conventional steel bearing An aftermarket crown race is also available which has 3mm of extra height built into it, which again can be used to help with clearance Part Number: HSLN Barcode: 5055168027890 Product Code: HOP HP 15 LS