Spindle sold separately. Engineered for the hardest abuse dished out by aggressive riders Low profile crank arm reduces pedal strike during technical climbs Compatible with SRAM 8-bolt direct mount chainring interface Q Factor: 167mm for 52mm Boost (176mm for Super Boost+) 5 year warranty Get your spindles here! TECH SPECS table{border-collapse:collapse;width:100%;} td{text-align:left;padding:8px;font-weight:350;} 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 Zink FR Cranks Length 155mm Direct Mount/BCD 8-Bolt Configuration 1x Spindle Interface 5Dev Material Aluminum Color Raw Silver