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Targeted to the overall needs of the average fly fisher.

Mainstream Full Sink


RIO’s Mainstream series of 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.

taper profile

Mainstream Full Sink - All Models

Line ColorSink RateLine Size
Brown 3-4 ips WF4S3
Brown 3-4 ips WF5S3
Brown 3-4 ips WF6S3
Brown 3-4 ips WF7S3
Brown 3-4 ips WF8S3
Black 6-7 ips WF4S6
Black 6-7 ips WF5S6
Black 6-7 ips WF6S6
Black 6-7 ips WF7S6
Black 6-7 ips WF8S6