Reimagined carbon crank is 300% stronger than Next-R cranks Patent pending insert redesign means loose inserts are a thing of the past Steel wear plate improves durability 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) *BB sold separately, use RF291* for English 68/73mm, BB92 or PF30 BBs BB spanner sold separately, use RF2997 Chainrings and spiders sold separately Designed, tested and manufactured in Race Face's Canadian facility 176mm Qfactor 475g (170mm)