RIO Mainstream Intermediate Fly Line

RIO Mainstream Intermediate is tailored for anglers who want a fully intermediate line with both the running line and head sinking. With a sink rate of 4–5 cm per second, it’s perfect for fishing just under the surface. The 25-meter line is ideal for coastal, lake, and river fishing and features self-lubricating properties for smooth casting. Head lengths range from 11.5–12.5 m depending on class, with a slightly heavier front for easier casting.

• Sink rate: 4–5 cm per second
• Head length adjusted by class: 11.5–12.5 m
• Ideal for fishing below the surface
• Available in line classes #4 to #7