- 110-Series features the strongest materials, most effective seals and the best aesthetics with a 110 year no-questions-asked warranty - Contoured and relieved 7075-T6 aluminum for minimized weight and maximized strength, with split-lip sealed stainless steel bearings - Low friction, dual-seal crown race and top cover provides maximum sealing from contaminants, plus a captured compression ring design for carbon steerer compatibility (Interlok spacer compatible, sold separately) - Cane Creek Integrated 41.0mm ID (36x45), Campy Hiddenset 42.0mm ID (45x45) , ZS (ZeroStack), or EC (traditional, External Cup) available for 1", 1-1/8" and tapered steerers - Internal parts are cross-compatible across the 10, 40 and 110 series S.H.I.S. / Stack Weight IS41/28.6 / IS52/40 / 9mm/1mm 75g IS41/28.6 / IS52/40 / 15mm/1mm 75g EC34/28.6 / EC34/30 / 16mm/12mm 98g ZS44/28.6 / EC44/30 / 8mm/12mm 96g ZS44/28.6 / EC44/40 / 8mm/12mm 96g