Superlight version of the revolutionary Era crank, approved for bikes up to 140mm rear travel Same layup and proprietary insert bonding tech as the Era All unnecessary body material eliminated, maintaining strength Pedal and drive side spindle inserts minimized Spindle integrated with non-drive crank arm, eliminating non-drive crank bolt Steel wear plate sized down to focus on highest wear areas Versatile Cinch system offers interchangeable spiders, limitless ring combinations, swappable width 30mm alloy spindles, and full compatibility across all relevant frame standards 136mm wide spindle: 52mm chainline on bikes with Boost 148mm rear spacing (optional: use Shimano 12sp ring for 55mm chainline with 136mm spindle) Bottom bracket cups, spanner, and chainrings sold separately Designed, tested and manufactured in Race Face&';s Canadian facility 170mm Q-factor 347g (170mm) TECH SPECS table{border-collapse:collapse;width:auto;max-width:100%;} td{text-align:left;padding:12px;font-weight:350;word-wrap:break-word;} tr:nth-child(even){background-color:#f2f2f2} th{background-color:#eb212e;color:white;text-align:left;padding:8px;} .desc .specs-heading{font-size:24px;font-weight:600;padding-top:35px;border-top:3px solid #f0f0f0;display:inline-block;border-bottom:4px solid #eb212e;width:142px;margin:0;} Model Era SL Length 165mm Direct Mount/BCD Cinch Configuration 1x Spindle Interface 30mm BB Shell Width 73mm Chainline 52/55mm Material Carbon Color Stealth