Fishing expert Stefan recommended it to a customer in Greenville 4 days ago
Product image 1
Product image 2
Scientific Anglers Mastery MPX Fly Line · WF · 4 wt · Floating · Amber - Willow

Scientific Anglers Mastery MPX Fly Line · WF · 4 wt · Floating · Amber - Willow

  • We price match
  • Returnable
Line weight
7 wt
8 wt
4 wt
6 wt
3 wt
5 wt
Color: Amber / Willow
Selling Fast!
This item has only a few units left in stock
Is this product right for you?

Get free gear advice from a fishing expert

Price comparisonYou’re getting the best price
Bass Pro Shops+ free shipping$79.95 free shipping$79.95
L.L.Bean+ free shipping$79.95
Scheels+ free shipping$79.99

Ask a fly fishing expert a question about this product

  • What's a more premium option?
  • What should I compare this to?
  • What's a cheaper option?
  • Is this right for me?
  • Can you show me more like this?
  • Ask your own question
Product details

The Scientific Anglers Mastery MPX Fly Line is built for freshwater fly fishing. Built with powerful taper on the head, this line is designed to be the ultimate presentation fly line. It can deliver dry flies and throw large streamers, and a braided multifilament core helps reduce line tangles. The low friction coating of the line is due to it being treated with Advanced Shooting Technology, which enables longer casts.

Key Features

  • Marked Line – The line is marked within the first two feet of the tip for easy line identification.
  • Easy Leader Connection – The welded loop ends make connecting the line to backing and leader easy via a loop-to-loop knot.
  • Greater Size – This line is made a half a size larger to better accommodate easier loading on modern fast action fly rods.
Fly line taper
Weight forward
Fly line type
Total length (ft)
Head length (ft)
Grain weight (gr)
Line type
Water type
Fly fishing type
Dries, Nymphs, Streamers, Indicators, Poppers/Big Dries
Fish species
Trout, Panfish, Bass, Carp, Steelhead, Steelhead, Pike
Fishing type
Head weight (gr)
Scientific Anglers Mastery MPX Fly Line · WF · 4 wt · Floating · Amber - Willow
Recommended by outdoors experts

Is this right for you? Chat with an expert to learn more about this product, compare it with similar options and get personalized recommendations

Top reviews
Would an expert recommend this for you?
Dave Jenkins
Dave Jenkins
Verified fly fishing expert
Reviewed Jul 13, 2022

This truly is one of the most versatile lines out on the market today. This line has been a staple for many anglers, myself included. The taper of the line makes it extremely forgiving and easy to cast. Versatility is incredible in the sense anglers can throw a dry fly, nymph rig, even some streamers on it, and being slightly heavier than your average line, it loads faster rods with ease making it a PERFECT line for many of the newer, stiffer rods that are out on the market. Perfect for all around trout fishing but ultimately is an excellent line of choice for any cold water fishery for any number of cold water gamefish. Want the jack of all trades line???? This is the one.

Aaron Tate
Aaron Tate
Verified fly fishing expert
Reviewed Jul 13, 2022

Casting smoothly at all distances, and mending at any range. S.A. lines are very durable, and you can expect it to last for years if taken care of.

Clark B.
Clark B.
Verified fly fishing expert
Reviewed Jul 13, 2022

This is a great all-around line. It is also a great line that holds up for several years. Lines last if taken care of, this one is a great investment! Just like out of the box even after two years for me!

Elijah Saint Blancard
Elijah Saint Blancard
Verified fly fishing expert
Reviewed Jul 13, 2022

Perfect for loading a fast rod and rolling out heavier nymphs and streams.

Mark Brown
Mark Brown
Verified fly fishing expert
Reviewed Jul 13, 2022

This is a great floating fly line for short to medium casts. Perfect for a stealthy approach on smaller streams and alpine lakes. It's important that you keep your top water (dry) fly floating, as this line will do it as well by supporting a strike indicator for shallow water nymphing. Recommended for small streams, creeks, and alpine lakes, as well as top water and shallow water nymph fishing with a strike indicator.