RDO performance for the ultimate advantage. The state of the art carbon fiber rigid fork. Reynolds goodness for your ride. Niner Flat Top bars available in RDO, carbon or alloy, perfect for 29ers and singlespeeds. Carbon and RDO options for any rider. Cogalicious singlespeed cogs in six sizes. Singlespeed-specific chainrings from Niner. Y.A.W.Y.D. Stands for You Are What You Drink – top cap holds your favorite bottlecap. EBB: Niner's new Bio-Centric bottom bracket system.