Freewheel: a ratcheting assembly that comes with one or more cogs and will allow the bicycle to coast without the pedals turning. Freewheels were being the precursor to freehubs and cassettes. Controls: Like flat bars, riser bars typically have brake levers and gear shifters, and extra Room for several accessories. https://bike-engines-explained62715.boyblogguide.com/34011551/the-smart-trick-of-predator-301-mini-bike-that-no-one-is-discussing