Rio Mainstream Trout 12′ Sink Tip Fly Line
The Rio Mainstream Trout 12′ Sink Tip Fly Line is designed for average and novice fly fishers. It features a slick coldwater coating on a supple, memory-free core, offering smooth casting and consistent performance. The line includes a short sink tip ideal for streamer fishing, with a sink rate of 3 Brown 3–4 ips.
With a slightly heavier head than standard lines, it provides easier loading and improved rod performance. The 12-foot sink tip is suitable for floating conditions and helps maintain control during casting.
| Specification | Detail |
|---|---|
| Sink Rate | 3 Brown 3–4 ips |
| Line Type | Sink Tip (Floating) |
| Length | 12 feet |
| Core Type | Memory-free, supple core |
| Coating | Slick coldwater coating |
| Designed For | Streamers, novice and average fly fishers |
FAQ
What is the sink rate of this fly line?
The sink rate is 3 Brown 3–4 ips.
Is this line suitable for beginners?
Yes, the Rio Mainstream series is designed for novice and average fly fishers with improved loading and easy handling.
Where is this fly line manufactured?
This line is made in Rio’s Idaho manufacturing facility.

Andrea Hardacre –
Easy to cast and very consistent on the water. The sink tip works well for streamers in clear streams. Good for someone just starting out with fly fishing.
Christopher Slater –
The line feels smooth and doesn’t tangle. The sink rate is just right for trout fishing in moderate currents. A reliable choice for beginners.
Audrey Alsop –
Perfect for my first season of fly fishing. The memory-free core makes it easy to handle, and the sink tip helps with casting accuracy.