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3D InTouch Big Nasty Sink Tip

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3D InTouch Big Nasty Sink Tip

When you're fishing for trout on a big stream such as the south fork of the Snake River, you need the RIO 3D InTouch Big Nasty Sink Tip line to help you cast large streamers. The line features RIO's Multi-Density that ensures a smooth transition of energy when casting and great depth control while fishing. Its ConnectCore offers low-stretch sensitivity so fish bites and brushing up against structure is very intuitive. To combat the issue of a curved sink that's common in modern fly lines that features a taper at the front end, RIO equipped the Big Nasty with their Density Compensation that adds a more dense material at the tip to ensure that the line sinks straight for an easier hook set.


  • Sink tip line for casting large streamers in fresh water fishing
  • Multi-Density Control for smooth transition of energy when casting
  • ConnectCore offers maximum sensitivity to bites and structure
  • Extreme Slickness tech creates ultra slick line that repels dirt
  • Density Compensation treatment ensures the line sinks straight
  • Welded front and back loops provide fast rigging on the river
  • Item #RIO003A
ConnectCore, Extreme Slickness
Overall Length
[WF5F] 90ft, [WF6F] 100ft, [WF7F]100ft, [WF8F] 100ft, [WF9F] 100ft, [WF10F] 100ft
Fly Line Type
weight forward
Fly Line Style
sink tip
Sink Rate
Front End Loop
Back End Loop
Recommended Use
river fishing, stillwater fishing