Race face next sl 10 speed carbon double chainsetthe next sl crank represents the next generation of race face carbon cranks weighing in at a category leading 650 grams next sl cranks are the lightest strongest 100 carbon fiber mtb cranks ever made race face has created a crank that goes beyond existing carbon material process limitations setting a new benchmark in performance xc components comes with a race face 3 year warrantyraceface next sl chainset features next sl combines over se