Trout 87665 Monofilament Line
- Mono Line
- 5 lb
- 1050 feet
- Copolymer
- More reviewed than 83%
A 350 yard spool of 4 lb test copolymer line in green, built for light finesse fishing rather than heavy tackle applications.
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How it ranks among the 47 mono lines we track
4.6★ across 2,992 Amazon ratings, Bayesian-smoothed toward the category average.
2,992 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
500+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 47 mono lines we track - how the scorecard works · full mono lines data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
This spool carries 350 yards of 4 lb test copolymer line in green, sold as the Trout 87665 and marked in the special field as part of the Trout Magnet SOS line. Copolymer construction sits between traditional monofilament and fluorocarbon, aimed at light finesse presentations.
At 4 lb test this line is built for small baits and light line techniques rather than general purpose casting, which lines up with the Trout Magnet naming even though the category listing files it under mono lines. The 350 yard spool gives enough length to respool a couple of light spinning reels rather than a single fill. No seller description or customer reviews accompany this listing to confirm real world knot strength or abrasion resistance.
- 350 yards / 1050 feet per spool
- 4 lb test copolymer line
- Green color for low visibility
- Part of the Trout Magnet SOS line
Who it's for
Anglers running light finesse rigs for trout, panfish or similar light biting species who need thin, low visibility line. Not suited to anyone targeting fish or cover that call for heavier test line.
Strengths and trade-offs
Drawn from this product's published specifications.
- 350 yards is enough to respool multiple reels
- 4 lb test suits light finesse presentations
- Thin diameter for low visibility
- 4 lb test will not handle heavy cover or large fish
- No reviews available to confirm knot or abrasion strength
Performance notes
Copolymer line generally casts thinner and sinks a bit faster than standard monofilament at the same test, which helps small baits get down without added weight. At 4 lb test the line favors light spinning reels and small hooks, and its thin diameter also means less resistance to abrasion than a heavier line would offer.
Specifications
| Brand | Trout |
|---|---|
| Model | 87665 |
| Dimensions & fit | |
| Line Weight | 5 lb |
| Item Weight | 2.4 ounces |
| Length | 350 yards |
| Construction & materials | |
| Material | Copolymer |
| Color | Green |
| Included components | |
| Pieces | 1050 feet |
| Other details | |
| Technique | Copolymer |
| Special | Trout Magnet SOS Fishing Line 4lb |
How it compares
This product against the closest alternatives we track in mono lines.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Trout 87665 Monofilament LineThis product | 4.6 / 5 | 2,992 | 4.4 / 5 |
| Clear AFL-05 Monofilament LineClear | 4.8 / 5 | 11,454 | 4.7 / 5 |
| Berkley BGQS20C-15 Monofilament LineBerkley | 4.7 / 5 | 23,102 | 4.5 / 5 |
| Zebco 300225 Monofilament LineZebco | 4.6 / 5 | 4,933 | 4.4 / 5 |
| KastKing KK-MO-White-300-8 Monofilament LineKastKing | 4.5 / 5 | 10,000 | 4.3 / 5 |
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Questions about the Trout 87665
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What is the test rating of the Trout 87665 line?
It is rated at 4 lb test.
How much line is on one spool?
350 yards, listed as 1050 feet in the spec data.
Is this monofilament or copolymer line?
The material is copolymer, which differs slightly from standard monofilament.