Detail Images

  • Scientific Anglers - Mastery GPX Fly Line -

Current Color

  • Scientific Anglers - Mastery GPX Fly Line -

Scientific Anglers Mastery GPX Fly Line

Temporarily Out Of Stock

Don't get too bummed. This item is on the way and will be available for purchase as soon as it rolls into the warehouse.

Can't wait? Consider one of the other Floating Fly Line we have in stock.

View Similar Products

3 Reviews


Sets the standard for fly lines around the world.

Designed for cold to temperate water, the Scientific Mastery GPX Fly Line is the ideal all-purpose fly line. Thanks to its taper design, the Mastery GPX handles a large range of flies and conditions with ease. This killer line also provides excellent versatility for presenting nymphs, dries, and streamers.
  • Advanced Shooting Technology (AST) sheds dirt, algae, and other particles for farther casting, better flotation, and friction-free movement
  • Dry Tip Technology (unique 3M Microballoon formulation) enhances flotation along the tip
  • Scientific Anglers Line Identification (SA-ID) allows you to identify your lines at a glance
  • Welded streamlined loops allow for quick rigging
  • Braided multifilament core provides low stiffness and moderate delivery
  • Built a half-size heavy for use with fast-action rods
  • Low memory core handles dries and terrestrials with ease
  • If you're buying a reel or spool and fly line, we'll be happy to rig it up for you, please give us a call at (855)-712-0513 for details
  • Item #SAS0011

Tech Specs

[core] braided multifilament
Overall Length
90 ft
Fly Line Type
Taper Design
[all weights] 0.5 ft
Front Taper
[2wt] 5 ft, [3wt] 5.5 ft, [4wt] 6 ft, [5wt] 6.5 ft, [6wt] 7 ft, [7wt] 7.5 ft, [8wt] 8 ft, [9wt] 8.5 ft
[2wt] 23 ft, [3wt] 24 ft, [4wt] 25 ft, [5wt] 26 ft, [6wt] 27 ft, [7wt] 28 ft, [8wt] 29 ft, [9wt] 30 ft
Rear Taper
[2wt] 4 ft, [3wt] 4.5 ft, [4wt] 5 ft, [5wt] 5.5 ft, [6wt] 6 ft, [7wt] 6.5 ft, [8wt] 7 ft, [9wt] 7.5 ft
Running Line
[2wt] 58 ft, [3wt] 56 ft, [4wt] 54 ft, [5wt] 52 ft, [6wt] 50 ft, [7wt] 53 ft, [8wt] 51 ft, [9wt] 49 ft
Recommended Use
freshwater fishing

Tech Specs

  • Reviews
  • Q & A

What do you think about this product?

Have questions about this product?

Does the Job!

Got this for a homie but have feedback to share. He likes it! Worked great while we floated Big Hole MT. Brought in some fish on surrounding rivers the next day as well. No complaints, great bang for your buck.

Does the Job!

So far so good

    I used this on my 5wt Z-axis rod last year and it was just okay. It did what I needed it to, but after having tried Rio Gold, I won't be going back to SA. This line seems to be a lot stiffer and really noisy compared to others that I've used. It does what it needs to, but that's about it.

    Great All Around Line

      For your faster action rods when you wanna have one floating line for dries, nymphs and the occasional streamer this is a great choice. I'm a fan. I like the SA GPX Sharkskin even better though! As always consult your local fly shop and they will let you know if this is a fly line with the taper that best fits your rod and fishing preference. Support your local shop!