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RIO Premier Fathom Fly Line

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A complete series of sinking lines designed for easy distance and complete fly control, with ultra-slick performance
  • Easy casting, fast loading head for minimum false casts and quick distance
  • Hang Marker shows where to fish The Hang
  • Density Compensation for complete depth control
  • Built on a supple core that will not tangle
  • Built with RIO's exceptionally slick, durable SlickCast coating



RIO's Fathom lines are a series of sinking lines designed specifically for the lake angler. Each line has a short, quick-loading head for minimizing the number of false casts, and for quick, easy distance, and a color contrast between the head and the running line to easily show the line's loading point. In addition, each line is built with a Hang Marker that shows anglers when to stop stripping, and when to fish the hang, and features RIO's Density Compensation (except type 7) for complete fly control.

Premier Fathom - All Models

Line Size Density Line Color Sink Rate Total Head Weight Head Length Total Length SKU
5wt Black/Blue Black/Blue 3ips 172gr (11.2gm) 35ft (10.7m) 105ft (32m) 6-19667
5wt Black/Maroon Black/Maroon 5ips 172gr (11.2gm) 35ft (10.7m) 105ft (32m) 6-19671
5wt Black/Green Black/Green 6ips 172gr (11.2gm) 35ft (10.7m) 105ft (32m) 6-19675
6wt Black/Blue Black/Blue 3ips 198gr (12.8gm) 35ft (10.7m) 105ft (32m) 6-19668
6wt Black/Maroon Black/Maroon 5ips 198gr (12.8gm) 35ft (10.7m) 105ft (32m) 6-19672
6wt Black/Green Black/Green 6ips 198gr (12.8gm) 35ft (10.7m) 105ft (32m) 6-19676
6wt Black/Gray Black/Gray 7ips 198gr (12.8gm) 35ft (10.7m) 105ft (32m) 6-19679
7wt Black/Blue Black/Blue 3ips 224gr (14.5gm) 35ft (10.7m) 105ft (32m) 6-19669
7wt Black/Maroon Black/Maroon 5ips 224gr (14.5gm) 35ft (10.7m) 105ft (32m) 6-19673
7wt Black/Green Black/Green 6ips 224gr (14.5gm) 35ft (10.7m) 105ft (32m) 6-19677
7wt Black/Gray Black/Gray 7ips 224gr (14.5gm) 35ft (10.7m) 105ft (32m) 6-19680
8wt Black/Blue Black/Blue 3ips 260gr (16.8gm) 35ft (10.7m) 105ft (32m) 6-19670
8wt Black/Maroon Black/Maroon 5ips 260gr (16.8gm) 35ft (10.7m) 105ft (32m) 6-19674
8wt Black/Green Black/Green 6ips 260gr (16.8gm) 35ft (10.7m) 105ft (32m) 6-19678
8wt Black/Gray Black/Gray 7ips 260gr (16.8gm) 35ft (10.7m) 105ft (32m) 6-19681