Compact Race Face Era Crank Arms, No Bb, 136 Bb, 170mm, Stealth Device [OYB4KmNz]

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 Q-factor. 475g (170mm)