Scientific Anglers Mastery Fly Lines

Mastery lines represent the pinnacle of our smooth line technology. No matter the species, no matter the situation, we've built a line for it. Everything from dry-fly trout purists to pelagic enthusiasts will find the line they need to catch the fish they crave.

 

Mastery Infinity

The Mastery Infinity has the power to bomb out streamers, yet retains delicacy for dry flies. It mends like an absolute dream, and delivers flies at all distances. Built a half-size heavy, with a long head and substantial front taper, it’s perfect for everything from trout and panfish to pike and steelhead. There’s a reason we call it the Infinity: there is no end to what you’ll be able to do with it.

Features:

  • For use in cold to moderate climates
  • Extremely versatile general-purpose taper designed for most freshwater species
  • Made a half-size heavy to load fast-action rods, but works well with a variety of rod actions
  • Extended head length for long-distance casts and superior mending ability
  • Excellent for dry flies, nymphs, and streamers
  • Braided multifilament core
  • SA ID - SA MS INFNTY WF X F (X = line weight)

Line weight Head length Total length Grain weight
WF3F 47.0' 90.0' 110
WF4F 48.0' 90.0' 130
WF5F 49.0' 90.0' 150
WF6F 50.0' 90.0' 175
WF7F 51.0' 90.0' 200
WF8F 52.0' 90.0' 225

 

Mastery Standard

Mastery Standard is a true to AFFTA line weight casters fly line. Built with a mid-length head for exceptional mending and accuracy at long distances. If you love casting this will quickly become one of your new favorites.

Features:

  • For use in cold to moderate climates
  • True to line weight
  • Mid-length head for exceptional mending and accuracy at distance
  • The caster’s fishing line
  • Braided multifilament core
  • SA ID - SA MASTERY STANDARD WF X F (X = line weight)

Line weight Head length Total length Grain weight
WF3F 45.0' 90.0' 100
WF4F 48.0' 90.0' 120
WF5F 51.0' 90.0' 140
WF6F 54.0' 90.0' 160
WF7F 57.0' 90.0' 185
WF8F 60.0' 90.0' 210

 

Mastery MPX

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.

Features:

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

Line weight Head length Total length Grain weight
WF3F 32.0' 90.0' 110
WF4F 34.0' 90.0' 130
WF5F 36.0' 90.0' 150
WF6F 38.0' 90.0' 175
WF7F 40.0' 90.0' 200
WF8F 42.0' 90.0' 225

 

Mastery Double Taper

Double-taper fly lines may not be the most versatile of the bunch, but they’re very good at what they’re designed to do: delicate work at shorter distances. An excellent dry-fly line, the Mastery Double Taper excels at presenting flies with a touch of grace, which is extra handy on spring creeks and smaller streams.

Features:

  • For use in cold to moderate climates
  • Double-taper lines are extra-delicate for subtle presentations
  • Excels at short-to-medium distances with dry flies and smaller nymphs
  • The ultimate fly line for chasing trout
  • Braided multifilament core
  • SA ID - SA MS TRT DT X F (X = line weight)

Line weight Head length Total length Grain weight
DT2F 81.5' 90.0' 80
DT3F 80.0' 90.0' 100
DT4F 78.5' 90.0' 120
DT5F 77.0' 90.0' 140
DT6F 75.5' 90.0' 160

 

Mastery Trout

The Mastery Trout line is ideally suited for chasing browns, rainbows, cutthroats, and any other trout you can imagine. Perfect for dry flies and ideal for smaller nymphs and streamers, the Mastery Trout is one of our mainstays and has helped anglers catch trout from the mountains of Germany to the hills of Georgia.

Features:

  • For use in cold to moderate climates
  • Revised compound taper - perfect for delicate deliveries
  • Excels at short-to-medium distances with dry flies, smaller nymphs and streamers
  • The ultimate fly line for chasing trout
  • Braided multifilament core
  • SA ID - SA MS TRT WF X F (X = line weight)

Line weight Head length Total length Grain weight
WF2F 64.0' 90.0' 80
WF3F 64.0' 90.0' 100
WF4F 66.0' 90.0' 120
WF5F 68.0' 90.0' 140
WF6F 70.0' 90.0' 160

 

Mastery Anadro/Nymph

If you’re anything like us, the allure of big fish and big rivers is intoxicating. That’s precisely why we created the Anadro fly line. Designed with line control in mind, its extended rear taper allows you to cast a mile, mend with authority, and turn over nearly any rig imaginable—from dredging double nymphs to larger dry-dropper concoctions. Steelhead, salmon, and trout won’t know what hit them.

Features:

  • For use in cold to moderate climates
  • For extended line conrol, long-distance casting, and turning over heavy rigs
  • Ideal for roll casting and long-distance mending
  • High-vis and high floating yellow tip
  • Features the AST shooting technology
  • Braided multifilament core
  • SA ID - SA MS ANADRO WF X F (X = line weight)

Line weight Head length Total length Grain weight
WF5F 60.0' 100.0' 175
WF6F 60.0' 100.0' 200
WF7F 61.0' 100.0' 225
WF8F 62.0' 100.0' 260
WF9F 63.0' 100.0' 305

 

Mastery Great Lakes Switch

Designed with the Great Lakes anadromous angler in mind the Great Lakes Switch line has an aggressive taper designed to turn over large indicators and the heaviest flies. Intended for use with switch and spey rods with a long head for superior mendability.

Features:

  • For use in cold to moderate climates
  • Designed for use with switch and spey rods when targeting salmon and steelhead with indicators
  • Long head for superior mendability
  • Aggressive taper turns over the largest indicators and heaviest flies
  • Ideal line for boat or wade fishing
  • Braided multifilament core
  • SA ID - SA MS GL SWTCH INDO WF X F (X = line weight)

Line weight Head length Total length Grain weight
WF6/7F 50.0' 90.0' 400
WF7/8F 50.0' 90.0' 500

 

Mastery Expert Distance Competition

Don’t let the name fool you. This is an amazing trout fly line masquerading as a competition line. Designed with an extra-long head and rear taper, the Mastery Expert Distance is excellent in the wind, provides smooth distance casting, and lets you throw mends you didn’t think were even possible. Sure, you can win a casting competition with it, but isn’t it more fun to catch fish?

Features:

  • For use in cold to moderate climates
  • Extra-long head and tapers for long-distance casting
  • Compound head design ensures strong turnover at distance
  • In orange competition colour with extended length (120')
  • Braided multifilament core
  • SA ID - SA MS EDC WF X F (X = line weight)

Line weight Head length Total length Grain weight
WF5F COMP 68.5' 120.0' 140
WF6F COMP 70.5' 120.0' 160
WF7F COMP 72.5' 120.0' 185

 

Mastery Competition Nymph

Specifically designed for European-style nymphing, if you’re looking for the thinnest, most sensitive line available, look no further. Built to FIPS Mouche standards, but designed to simply catch fish, the Mastery Competition Nymph line is as simple as it gets: 80 feet of level floating line. It doesn’t matter if you’re in an international competition, or just trying to outdo yourself, the Competition Nymph line will perform, fish after fish.

Features:

  • For use in cold to moderate climates
  • Ultra-thin level-line design for premium performance and sensitivity
  • For use with all rods from 0-5 weight
  • Meets FIPS Mouche competition specifications
  • For use in moderate and cold climates
  • Monofilament core
  • Comes with braided loop connection

Line weight Diameter Total length Grain weight
0-5 Float .022"/.056mm 80.0' N/A

 

Mastery Titan

You’ve got articulated streamers hanging from the lampshade on your desk. You think in terms of black, white, or olive. The term conehead doesn’t refer to an old comedy sketch. We totally get it. And that’s why we designed the Mastery Titan. If you have an all-encompassing need to throw big flies for big fish, then look no further. This fly line is made for you.

Features:

  • For use in cold to moderate climates
  • Loads quickly and delivers the biggest flies to the furthest targets
  • Excellent turnover due to short, powerful head and short front taper
  • Ideal line for boat or wade fishing
  • For temperate climates
  • Braided multifilament core
  • SA ID - SA MS TTN WF X F (X = line weight)

Line weight Head length Total length Grain weight
WF6F 33.5' 90.0' 210
WF7F 33.5' 90.0' 240
WF8F 33.5' 90.0' 280
WF9F 33.5' 90.0' 330
WF10F 33.5' 90.0' 380

 

Mastery Jungle Titan

When you’re knee-deep in a clear jungle stream somewhere, you need the finest tools available in order to chase down the fish of your dreams. Whether it’s a radiant golden dorado or wickedly powerful peacock bass, the Mastery Jungle Titan fly line will get the job done. Built for the harsh jungle environments, and designed to turn over the largest flies possible, this fly line just might make you King or Queen of the jungle.

Features:

  • Tropi-Core technology remains slick and stiff in tropical environments
  • Designed for throwing big dries and streamers to tropical fish such as barra
  • Powerful head loads quickly and delivers large flies to distant targets
  • Will turn over the largest flies imaginable
  • Built two sizes heavy for turning over big rigs; use designated line weight for your rod
  • Ideal line for boat or wade fishing
  • SA ID - SA MS JUNGLE TITAN WF X F (X = line weight)

Line weight Head length Total length Grain weight
WF8F 33.5' 90.0' 280
WF9F 33.5' 90.0' 330
WF10F 33.5' 90.0' 380

 

Mastery Bass Bug

You’ve got articulated streamers and poppers hanging from the lampshade on your desk. You think in terms of bass and other freshwater natives. The term conehead doesn’t refer to an old comedy sketch. We totally get it. And that’s why we designed the Mastery Bass Bug. Similar in design to our Mastery Titan Long, but with a specialized warm-weather coating built to withstand hot temperatures. It’s quite possibly the best bass fly line ever constructed. If you have an all-encompassing need to throw big flies for bucketmouths, then look no further. This fly line is made for you.

Features:

  • For use in moderate and hot climates
  • Designed specifically for throwing large, air-resistant dry flies and streamers in rivers, lakes, and ponds
  • Overweighted by two line sizes to assist in loading rods and turning over heavy rigs
  • Extended rear taper for line control and mending ability
  • Ideal line for boat or wade fishing
  • Features a specialized warm-weather coating for fishing in high temperatures
  • Braided multifilament core
  • SA ID - SA MS BASS BUG WF X F (X = line weight)

Line weight Head length Total length Grain weight
WF6F 43.0' 90.0' 210
WF7F 43.0' 90.0' 240
WF8F 43.0' 90.0' 280
WF9F 43.0' 90.0' 330
WF10F 43.0' 90.0' 380

 

Mastery Saltwater

If you had to choose one saltwater fly line for a variety of situations and species, the Mastery Saltwater taper should be a finalist. The versatile compound design provides enough power to cut through the wind, while retaining a delicate delivery for spooky fish on the flats. Built for a wide range of temperatures and environments, the Mastery Saltwater simply does it all.

Features:

  • Designed for use in temperate and tropical climates
  • Compound taper turns over big flies
  • Two tone fore better visibility
  • Variable head lengths for distance casting and quick shots to passing fish
  • Small diameter to deal with windy conditions
  • Braided multifilament core
  • SA ID - SA MS SW WF X F (X = line weight)

Line weight Head length Total length Grain weight
WF7F 37.5' 100.0' 200
WF8F 37.5' 100.0' 225
WF9F 37.5' 100.0' 260
WF10F 40.5' 100.0' 305

 

Mastery Grand Slam

Tarpon. Bonefish. Permit. All in one day. All on one line. That’s the idea behind the Mastery Grand Slam, a fly line designed specifically to help you achieve one of angling’s most elusive accomplishments. With a short, powerful head the Grand Slam cuts through wind and turns over crabs, shrimp, and tarpon toads with ease. We’ve got the line. You just need the fish.

Features:

  • Tropi-Core technology remains slick and stiff in tropical environments
  • Designed for demanding tropical saltwater applications
  • Loads rods quickly, cuts through wind with ease, and turns over big saltwater flies
  • Short, powerful head for quick casts to moving targets
  • Overweighted by nearly a full line weight
  • SA ID - SA MS SLAM WF X F (X = line weight)

Line weight Head length Total length Grain weight
WF7F 40.0' 100.0' 205
WF8F 40.0' 100.0' 235
WF9F 40.0' 100.0' 270
WF10F 40.0' 100.0' 320

 

Mastery Bonefish

A day of bonefishing will either be the most fun you’ve had with a fly rod or the most frustrating day of your life. Take some of the chance out of the equation with the Mastery Bonefish fly line. Built on a stiff core for tropical conditions, the Bonefish taper features a long, compound head for casting accuracy and delicate deliveries to fish that you’ll swear have a sixth sense.

Features:

  • Tropi-Core technology remains slick and stiff in tropical environments
  • Revised taper for delicate presentations to skittish fish
  • Precise presentations in tropical conditions
  • Stiff coating and core for enhanced shooting
  • Looped on both ends for quick rigging
  • Long head for fly control and casting accuracy
  • SA ID - SA MS BF WF X F (X = line weight)

Line weight Head length Total length Grain weight
WF7F 37.5' 100.0' 185
WF8F 39.7' 100.0' 210
WF9F 41.8' 100.0' 240

 

Mastery Euro Nymph Kit

Convert almost any single hand trout rod quickly to a Euro Nymphing setup with this kit. Includes a 20' floating Euro Nymph Tip (0.025" diameter), our Absolute Euro Nymph leader, and foam a storage spool.

Features:

  • For use in cold to moderate climates
  • Quickly convert any trout rod to a competition nymphing rig