SA Frequency MPX Freshwater Floating Fly Line
Built as a half-size heavy, the SA Frequency MPX Fly Line taper starts where the GPX left off. Redesigned with more mass toward the front of the head, the MPX provides the same benefits of the GPX, with an added emphasis on presentation. The power is still there, only with an added bit of finesse.
- An excellent general-presentation line for trout, panfish, bass, grayling and carp
- Also useful for steelhead, salmon, and pike
- Made as a half-size heavy to load fast-action rods, but works well with a variety of rod actions
- Best for large dry flies, nymphs, and streamers
- For use in moderate and cold climates
- Braided multifilament core
- AST slickness
- Welded loops
| Specification | Detail |
|---|---|
| Line Type | Floating |
| Weight | Half-size heavy |
| Core Material | Braided multifilament |
| Best Use | Large dry flies, nymphs, streamers |
| Recommended Fish | Trout, panfish, bass, grayling, carp, steelhead, salmon, pike |
| Climate Suitability | Moderate and cold climates |
| Loop Type | Welded |
| Finish | AST slickness |
FAQ
What type of fishing is the SA Frequency MPX line best suited for?
The SA Frequency MPX is best suited for general presentation fishing, especially with large dry flies, nymphs, and streamers. It performs well on trout, panfish, bass, grayling, carp, steelhead, salmon, and pike.
Is this line suitable for cold water conditions?
Yes, the MPX line is designed for use in moderate and cold climates, making it a reliable choice in cooler environments.
Does the line work well with fast-action rods?
Yes, it was specifically designed as a half-size heavy to load fast-action rods, though it works well with a variety of rod actions.


Olivia Mackay –
I’ve used the MPX line on cold mornings with trout and panfish. The front weight helps with casting accuracy and keeps the line steady in the water. It feels more natural when presenting large dry flies. Good balance between power and finesse.
Jessica Springer –
Works well for nymphing in spring streams. The braided core holds up well, and the welded loops stay secure. A bit heavier than I expected, but that’s fine for the presentation it offers.
Austin Gill –
Switched from my old GPX line and noticed a smoother, more controlled cast. The added front mass helps with delicate presentations, especially when targeting carp and grayling in still waters.
Sally Simpson –
Used it on a steelhead run in a cold river. The line stayed on the water well and didn’t tangle. Good for larger streamers and worked well with a medium-fast rod.
Adrian Murray –
The AST slickness makes it easy to handle and slide through the air. I appreciate the welded loops—no slipping during long casts. Perfect for early season fishing.