RIO 6-20751 Fly Line Review
Our verdict
The RIO 6-20751 fly line costs $49.99 for a 5-weight floating taper and holds a 4.4 star average across 216 reviews, the lowest rating among the four fly lines in this comparison. With over 50 units bought last month, it still shows real recent demand despite trailing on stars.
Check price on AmazonBest for
Fly anglers on a budget who want a 5-weight floating line at the same $49.99 price as the Rio Mainstream Trout, and who are comfortable with a slightly lower rating in exchange for the same weight class.
Skip if
Skip it if rating is the deciding factor, since the 4.4 stars here trail every other fly line in this comparison, from the Rio Mainstream Trout and Scientific 120814 at 4.6 up to the Cortland 403055 at 4.7.
- Material Plastic
- Line Weight 5
- Technique Fly
- Size 5 Weight
- Color Lime Green
- Pieces 1.0 Count
- Priced 150% above the category median ($19.99 across 18 tracked models)
Our scorecard
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Owner rating4.4/5
4.4 average across 216 owner ratings
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Popularity1.7/5
216 owner reviews, fewer than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other fishing gear and tackle we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
Picture needing a 5-weight floating line without paying the premium some fly line brands command, and finding one priced identically to a well-known alternative. The RIO 6-20751 sits at exactly that spot, a 5-weight fly taper made from plastic, in lime green, priced at $49.99, described in the listing as a Rio Mainstream Trout Dt5F Lemon Green.
Priced against the rest of this comparison, the RIO 6-20751 ties the Rio Mainstream Trout at $49.99, while the Scientific 120814 costs $67.67 and the Cortland 403055 runs $69.95. Its review count of 216 lands in the middle of the group, ahead of the Scientific line's 166 but well behind the Rio Mainstream Trout's 438.
The 4.4 star average is the lowest of the four fly lines here, trailing the 4.6 to 4.7 range the others post, though it is not far off. With over 50 units bought last month, the demand signal is real, even if it falls short of the Cortland 403055's stronger 100 plus figure. For anglers who want the same weight class and price as the Rio Mainstream Trout but do not mind a modestly lower rating, it remains a workable option.
Pros
- Priced at $49.99, tied for the lowest price in this comparison with the Rio Mainstream Trout
- 5-weight floating taper, matching the same rod class as the Cortland 403055 and Scientific 120814
- Over 50 units bought last month, a real recent demand signal
- 216 reviews, more than the Scientific 120814's 166
- Lime green color for visibility while casting
- In stock and sold as a single spool ready to load
Cons
- 4.4 star average is the lowest rating of any fly line in this comparison
- Trails the Rio Mainstream Trout's 438 reviews despite sharing the same price
- Bought-last-month figure of 50 plus is smaller than the Cortland 403055's 100 plus
- Listing description references a 'Rio Mainstream Trout Dt5F Lemon Green' naming, which reads as inconsistent branding on the product page
Specifications
| Material | Plastic |
|---|---|
| Line Weight | 5 |
| Technique | Fly |
| Size | 5 Weight |
| Color | Lime Green |
| Pieces | 1.0 Count |
| Feature | One RIO Mainstream Trout Dt5F Lemon Green |
Performance notes
This is a 5-weight floating fly line, matching the rod class of the pricier Cortland 403055 and Scientific 120814 in this comparison, which puts it in range for medium-sized trout water and standard dry fly presentations rather than the lighter 4-weight work the Rio Mainstream Trout is built for. Floating construction means it rides on the surface, the usual choice unless a sinking or sink-tip line is specifically needed for deeper presentations. The lime green color trades some of the subtlety of a natural tone like the Rio Mainstream Trout's green or the Cortland's peach for higher visibility, which can help an angler track the line in the air during the cast even if it stands out more on the water. Plastic construction is standard for fly lines at this price point across the comparison.
What buyers say
At 4.4 stars, the RIO 6-20751 posts the lowest rating of the four fly lines in this comparison, sitting behind the Rio Mainstream Trout and Scientific 120814 at 4.6 and well behind the Cortland 403055's 4.7. Its 216 reviews put it ahead of the Scientific line's 166 but far short of the Rio Mainstream Trout's 438, giving it a moderate sample size overall. The bought-last-month figure of over 50 units is a real, if modest, demand signal, smaller than the Cortland's 100 plus but still a nonzero reading where two of the four lines in this comparison show no bought-last-month activity at all. Taken together, the pattern points to a steady but not standout seller.
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Frequently asked questions
Why does the RIO 6-20751 have the lowest rating in this comparison?
Its 4.4 star average across 216 reviews is lower than the 4.6 to 4.7 stars the other three fly lines in this comparison hold, though the gap is modest. The facts do not explain the reason for the difference, only that it is the lowest-rated of the four at its price point.
How does the RIO 6-20751 compare to the Rio Mainstream Trout at the same price?
Both cost $49.99, but the Rio Mainstream Trout holds a higher 4.6 star rating against this line's 4.4 and carries far more reviews, 438 versus 216. At the same price point, the Rio Mainstream Trout has the stronger track record between the two.
Is 5-weight the right line class for general trout fishing?
Yes, 5-weight is one of the most common all-around choices for trout fishing, matching the same class as the Cortland 403055 and Scientific 120814 in this comparison. It handles a wider range of conditions than the lighter 4-weight Rio Mainstream Trout line, making it a versatile pick for varied water.