Cane Creek 70-Series Headset IS41/28.6|IS52/40 Blue Matte Black Many dual-crown suspensions forks such

Many dual-crown suspensions forks such as the RockShox Boxxer or Fox 40 use non-tapered 1 1/8" steerers

Updated tooth profile works with SRAM Flattop chain

ISEV-MM is for a Shimano I-SPEC EV shifter mounting to a SRAM MatchMaker brake

The boost offset optimizes this spider for the M30 cranks with a 52mm chainline

and 0mm offset for 55mm chainline and SRAM Transmission optimization

Cane Creek 70-Series Headset IS41/28.6|IS52/40 Blue Matte Black Many dual-crown suspensions forks suchDesigned to bridge the gap between the 40 and 110 series headsets Contoured and relieved 6061 T6 aluminum for minimized weight and maximized strength Low friction upper bearing seal completely seals cup from contaminants and is fully captured by the top cover with no loose parts. Premium, sealed stainless steel Hellbender bearings Dual Seal crown race provides excellent seal efficiency with low friction Carbon friendly compression ring and Interlok