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SA Mastery MPX Fly Line
    SA Mastery MPX Fly Line
    Purchase SA Mastery MPX Fly Line
    • SKU: sa-mastery-mpx-line
      SA Mastery MPX Fly Line

    • Customer Reviews ( 24 ) Write A Review
    • $79.95

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    Scientific Angler Mastery MPX Fly Lines is the best all-around fly line that SA has ever made. Mastery MPX will handle everything from tossing small dries to slinging huge streamers. Built a half-size heavy, the MPX taper is designed with more mass toward the front of the head with an added emphasis on presentation. The Mastery MPX is a powerful line that loads rods quickly, yet with a bit of finesse added in. 

    These lines are proven performers and feature the AST Plus Slickness Technology to effortlessly shoot line further. AST Plus also makes Mastery MPX the most durable line, maintaining its slick properties 8 times longer than other fly lines. Mastery MPX throws bullet loops, increases casting distance, and will make any angler a better caster. Master MPX also excels at line control, roll casting with ease, and mends line effortlessly for perfect, drag free drifts. This premium SA Mastery MPX line will do it all extremely well and is the go-to all-purpose freshwater fly line.



    • The ultimate general presentation taper for all situations
    • 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


    Mastery MPX Taper


    Cold Water Type

    Medium Water Type




    Poppers / Big Dries



    WF-3-F31.5’ / 9,6m90.0’ / 27,4m110gr / 7,1g
    WF-4-F33.5’ / 10,2m90.0’ / 27,4m130gr / 8,5g
    WF-5-F35.5’ / 10,8m90.0’ / 27,4m150gr / 9,8g
    WF-6-F37.5’ / 11,4m90.0’ / 27,4m175gr / 11,3g
    WF-7-F39.5’ / 12,0m90.0’ / 27,4m200gr / 13,0g
    WF-8-F41.5’ / 12,6m90.0’ / 27,4m225gr / 14,6g
    WF-9-F43.5 / 13,3m90.0’ / 27,4m260gr / 16,8g

    * Grain weight for the first 30′

    Rate Product
    ★★★★★ ★★★★★
    5.00/5 Stars out of 24 Reviews
    Pages 1   2   3
    Verified Buyer
    Fantastic all around line!
    Laszlo (Texas) | July 1st, 2022
    Great all around line for the money. I got the MPX on my first set up echo ion XL 6wt. Heavy enough to load the rod and casts like a dream. had it very easy for me to get into fly fishing and stay in it. You really cant go wrong with this or most SA lines.
    Verified Buyer
    Great Line!
    JL (East Tennessee) | January 11th, 2022
    Using on a 4wt Superfine on small streams. Roll casts like nothing else I have seen. Very impressed. Makes it look as if I know what I'm doing out there. I highly recommend.
    Verified Buyer
    Scientific Anglers MPX 6wt fly line
    Jason | December 11th, 2021
    Great fly line, one of my favorites for my 6wt. Fast shipping as well.
    Verified Buyer
    Great fly line
    Robert Johnson (ARKANSAS) | August 1st, 2021
    My first time using this line and I feel like I cast like a pro now. I recommend this line, I’m using 3wt and I’m highly impressed!
    Verified Buyer
    First choice for Smallmouths
    Dan Ralph (NJ) | July 2nd, 2021
    Fished the Mastery stealth MPX 6 wt on a recent smallmouth bass trip in Vermont. This line easily turned over large poppers and foam terrestrials cast after cast on both calm and windy days.
    Verified Buyer
    Great Line at an Awesome Price
    Steve Rocca (MI) | June 20th, 2021
    Bought this line on a whim and couldnt be happier. Selected the 5wt and have been casting like a pro.
    Verified Buyer
    Great Mid Level Line
    Jake (Idaho) | May 3rd, 2021
    This line casts very well for a non-textured line.
    Verified Buyer
    Easy Casting
    Robert (Normal, IL) | April 5th, 2021
    Very easy casting line. With a 5wt it delivered small dries and streamers with ease. Excited to use it on the pond this summer.
    Verified Buyer
    Great line
    Rodger (PA) | March 17th, 2021
    Another quality line from SA. At a half-size heavy, I have no problem turning over indicator rigs. I would recommend this line.
    Verified Buyer
    Mastery GPX casts nicely
    John (Pennsylvania) | March 15th, 2021
    Not much time on the water with it yet but like the Mastery GPX so far. It casts nicely with my 5wt fast action TFO rod and though I'm not an accomplished caster by any measure, I am finding it to be easy enough to manage.

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