Rio Elite Flats Pro Intermediate Fly Line
RIO’s best tropical saltwater intermediate sinking fly line, designed for anglers targeting bonefish, permit, and tarpon on tropical flats.
The line features RIO’s new DirectCore, a proprietary low-memory, low-stretch monofilament core that maintains stiffness in tropical heat while lying straight on the water without curl or retraction. With 30% less stretch than standard tropical saltwater fly lines, it delivers solid strip sets and reduces fight time.
Enhanced with RIO’s SureFire technology—previously used in freshwater fly lines—this line offers improved performance and consistency in challenging saltwater conditions. The triple color design provides better visibility and tracking in murky waters.
| Specification | Detail |
|---|---|
| Line Type | Intermediate Sinking |
| Core Technology | DirectCore |
| Stretch | 30% less than standard tropical lines |
| Application | Tropical flats fishing for bonefish, permit, tarpon |
| Technology | SureFire |
FAQ
What makes the DirectCore technology different from standard saltwater fly line cores?
The DirectCore has 30% less stretch and maintains stiffness in tropical heat, reducing curl and retraction on the water for better casting and strip performance.
Is the SureFire technology used in this line effective in saltwater conditions?
Yes, SureFire technology improves line performance and consistency, offering better control and tracking in saltwater environments.
Can this line be used for fishing in both clear and murky waters?
The triple color design enhances visibility in murky waters, making it effective in a range of water conditions.


Jasmine Ferguson –
Used this line on a bonefish trip in the Caribbean. The line stayed straight in the heat and didn’t curl. Strip sets were solid and the fight time was shorter than with my previous line. Great for flat fishing in tropical conditions.
Hannah Rees –
Fished with this line on a permit outing. The SureFire tech helped with line control and visibility. It performed well in murky water and didn’t stretch much during casting or reeling.
Anna Wallace –
Good performance on flats. The line holds its shape in heat and feels more responsive. A bit more expensive than others, but the consistency is worth it for saltwater flats.
Harry Paterson –
This is the first fly line I’ve used that doesn’t curl in the heat. The DirectCore works perfectly in tropical conditions. I’ve caught several bonefish with it and the fight time was much shorter.