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$ 39.99 USD

RIO’s Mainstream bass fly lines have been developed to meet the overall needs of the average and novice fly fisher, and are designed to optimize rod performance with slightly heavier and shorter head lengths. Every Mainstream line undergoes the same rigorous production processes and quality control standards as all RIO fly lines, and is made in RIO’s Idaho manufacturing facility. Each bass line is built with a warm water coating over a supple memory-free core, for the best in performance.

  • Yellow color
  • Warm water coating
  • Memory-free core
  • Slightly heavier, easy casting lines for a multitude of situations
  • Short, powerful front taper for good presentation and turnover


Color Sink Rate Size 30' Head Weight Full Head Weight
Yellow Float WF6F 178gr (11.5gm) 205gr (13.3gm)
Yellow Float WF7F 197gr (12.8gm) 217gr (14.1gm)
Yellow Float WF8F 225gr (14.6gm) 250gr (16.2gm)