Scientific Angler's Mastery MPX Single Hand Fly Line

For years, SA Mastery Series lines have been among our most-popular and best-performing lines. While some things have changed, one thing hasn’t: Mastery Series lines still deliver just as well as—if not better than—they ever have before.

With our AST slickness additive, Dry-Tip technology, color change at the rear of the head, and SA•ID identification system, Mastery lines are still the best smooth lines at their price point on the market.

From dry-fly purists to tarpon-chasing poon hounds, the Mastery Series from SA provides every angler the lines they need to catch the fish they crave.

For years, the gold standard in the Scientific Anglers lineup was the GPX taper. From tossing small dries to slinging huge streamers, the GPX could do it all. But all good things must come to an end. Built a half-size heavy, the MPX 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. Meet your new best friend and the best all-around fly line we’ve ever made.

• The ultimate general presentation taper.
• Improved version of our GPX taper.
• Built a half-size heavy to load rods and turn over large flies easily.
• Excellent with dry flies, nymphs, and streamers.
• Features the ST+ slickness additive.
• For use in moderate and cold climates.
• Braided multifilament core.
• SA ID – SA MS MPX WF X F (X = line weight).