Photos: Drennan · supplied retailer imagery
Mainline · Monofilament · Our take
Drennan Supplex Mono
Original clear Supplex Mono · 100m spool
Clear, ultra-limp mono with a useful spread of strengths. Supplex makes plenty of sense for float and lighter feeder work, though that 100m spool needs a bit of planning.
- Clear monofilament with an ultra-limp, supple design.
- Mainline supplied on 100m spools.
- Described by Drennan as abrasion resistant.
- Confirmed options span 3lb at 0.14mm to 12lb at 0.28mm.
Make sure it’s the right one. This covers the original clear Supplex monofilament, not Supplex Fluorocarbon. We haven't tested it on the bank.
Tackle Index Score
Tackle Index score
Provisional desk-based scores for the stated features and intended uses, not bank-tested results. Value remains tentative without a checked current price.
- Product Quality8.8/10
- Performance8.8/10
- Impact on Fish Catching8/10
- Ease of Use8.9/10
- Value for Money7.7/10
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Who it suits
Is it right for you?
Great for
- Float anglers fishing mixed coarse venues. The supple design and choice of finer diameters make it a sensible candidate for balanced waggler and running-line setups.
- Short- to medium-range feeder anglers. An appropriately chosen strength offers mono's cushioning, provided 100m gives enough working line and reserve.
Maybe skip if
- Anglers filling large reels for distance work. The 100m format is less convenient when you need substantial casting length plus a healthy reserve.
- Anglers wanting braid-like bite feedback. Mono stretches, so it won't give the same direct connection at distance.
The lowdown
Introducing the Drennan Supplex Mono
Clear, ultra-limp mono with a useful spread of strengths. Supplex makes plenty of sense for float and lighter feeder work, though that 100m spool needs a bit of planning.
- Clear monofilament with an ultra-limp, supple design.
- Mainline supplied on 100m spools.
- Described by Drennan as abrasion resistant.
- Confirmed options span 3lb at 0.14mm to 12lb at 0.28mm.
Quick verdict
A sensible all-rounder, with one spool-sized catch
Supplex looks a cracking fit for anglers who want supple mono for everyday coarse fishing. The clear finish, abrasion-resistant design and range of diameters give you plenty of room to match it to your float or feeder setup.
The main compromise is the 100m spool. That's manageable with backing for many short- and medium-range jobs, but less handy for deep spools or longer casts. Choose it for the fishing you actually do, rather than expecting one strength to cover everything.
Provisional desk-based scores for the stated features and intended uses, not bank-tested results. Value remains tentative without a checked current price.
- Product Quality
- 8.8/10
- Performance
- 8.8/10
- Impact on Fish Catching
- 8/10
- Ease of Use
- 8.9/10
- Value for Money
- 7.7/10
The stated supple, abrasion-resistant design is a promising package, though long-term durability hasn't been checked by us.
Its limp character suits everyday float and feeder work on paper, with the usual mono-stretch trade-off.
A well-matched diameter can support presentation and fish playing, but no catch-rate improvement is established here.
Supple mono is an approachable choice, although the 100m spool may require backing and careful capacity planning.
The useful feature set supports a cautious score, but actual value depends on current price and whether 100m fits your reel.
Head to head
How it stacks up
Side by side with the closest kit we've reviewed. This updates as we add more reviews.
Drennan
Drennan Supplex Mono (this one)
Top scorer
Top scorer
Scores are our own, out of 10. Best in each row is in green. Prices change, so check the latest before you buy.
The full rundown
Everything you'll want to know about the Drennan Supplex Mono
Drennan Supplex Mono is the sort of mainline that makes sense when you'd rather get the float dotted down than spend the morning arguing with your reel. It's clear monofilament, supplied on a 100m mainline spool, with an ultra-limp, supple design. Nothing flashy, mate. Just a familiar material aimed at being manageable. For coarse anglers switching between a waggler rod and a lighter feeder outfit, that's a useful starting point. The trick is choosing the right diameter for the job, rather than treating the name as a shortcut.
Let's get the honesty bit out of the way: we haven't fished with this line on the bank. What follows is a look at its stated features and where they fit into real coarse fishing, not a tale about a conveniently landed PB. Drennan describes Supplex as abrasion resistant, and its supple character is a central part of the pitch. Both are relevant to mainline, but neither tells you exactly how it'll behave after months of use. Knots, line lay and regular checks still matter. No magic spool gets you out of those.
For float work, suppleness is an appealing quality because stiff coils can be a proper nuisance. They can complicate casting and line control, particularly when you're trying to fish neatly rather than launch everything towards the far bank. Supplex's limp design makes it a sensible candidate for running-line float setups. That isn't a promise of perfect presentation, though. Wind, surface tow, float choice and how you manage the line all play their part. Get the basics bob on and the mainline has a much easier job to do.
The confirmed lighter choices give you useful steps rather than one big jump. There's 3lb at 0.14mm, 4lb at 0.16mm and 5lb at 0.18mm. Those figures help when you're balancing a lighter outfit for roach, skimmers or mixed silverfish, although the right choice still depends on the swim and tackle. Don't automatically go finest just because bites are shy. If there's a realistic chance of a better fish, awkward weed or rough edges nearby, a little more mainline strength can be a sensible trade rather than clumsy fishing.
Moving up, the confirmed options include 6lb at 0.20mm, 8lb at 0.23mm, 10lb at 0.26mm and 12lb at 0.28mm. That gives you room to build more substantial outfits, including suitable feeder setups and some carp work. The word 'suitable' is doing a job there. A little feeder on an open-water commercial and a heavy feeder on a pushing river aren't the same ask. Think about the load you're casting, your rod and any leader requirements. Breaking strain alone doesn't decide whether the whole setup is safe.
The 100m spool is the detail to check before you buy. For plenty of shorter-range coarse fishing, it can provide a usable working length with backing underneath. On a deep spool, though, don't expect it to fill the reel by itself. At longer range, you also need spare line beyond the cast for playing fish and cutting back worn sections. A spool that only just covers your usual chuck isn't much of a cushion. Check your reel's stated capacity against the chosen diameter and plan the fill before getting everything wet.
Abrasion resistance is welcome, but treat it as a useful feature rather than permission to drag line over anything rough. Run the working end through your fingers regularly, especially after a fish has taken you near cover or you've retrieved through a gritty margin. If it feels nicked or rough, cut it back and retie. Wet your knot, draw it down carefully and check it before casting. Those little habits aren't exciting, but they're much better than finding a damaged section when a decent fish finally decides it's on the munch.
So who should have Supplex on the shortlist? Mainly the angler after straightforward, supple mono for everyday coarse fishing, with enough choice to balance different rods and venues. It's less convincing as a one-spool answer for distance fishing or anyone specifically wanting braid's low-stretch connection. Mono brings cushioning, but that stretch also softens feedback as range increases. Choose around that trade-off and the 100m format, and Supplex looks like a sensible option. Just don't expect fresh mainline to find the fish for you. You've still got to pick the spot.
Specifications
The nuts and bolts
- Material
- Monofilament
- Colour
- Clear
- Mainline spool length
- 100m
- Lighter options
- 3lb: 0.14mm / 1.36kg; 4lb: 0.16mm / 1.8kg; 5lb: 0.18mm / 2.27kg
- Middle options
- 6lb: 0.20mm / 2.72kg; 8lb: 0.23mm / 3.63kg
- Heavier options
- 10lb: 0.26mm / 4.54kg; 12lb: 0.28mm / 5.45kg
Specs checked with Drennan, Oct 2026.
Spot a model or spec change?
Our take
Buy for the swim, not just the breaking strain
Supplex's appeal is its limp, supple character. That's relevant when you want manageable reel line rather than stiff coils getting involved every time you open the bail arm.
Diameter still matters. Match the line to your casting load, rod, fish and snags before worrying about squeezing another bite out of a finer setup.
The tackle
Closer look: straightforward mono, useful choices
You're buying clear monofilament on a 100m spool, with suppleness and abrasion resistance as its headline features. Clear doesn't mean invisible, and abrasion resistant doesn't mean damage-proof. The useful bit is having a manageable-looking mainline option in several diameters, so you can balance the outfit rather than force one spool into every job.
When loading it, keep steady tension and follow your reel maker's filling guidance. Don't overfill the spool in pursuit of an extra yard. With backing, keep the joining knot well below the line you expect to use while casting and playing fish.
Worth knowing. A 100m top-up isn't automatically 100m of useful fishing reserve. Your cast, any line a fish takes and sections lost through trimming all draw from the same length.
Your fishing
Who it suits: float rods and sensible feeder work
If your usual session involves a waggler for silvers or a feeder at modest range, Supplex deserves a look. Pick a strength that works with your rod and hooklength, then adjust to the venue. An open swim gives you a different set of choices from a tight corner with roots under your feet.
For carp, judge the whole situation rather than the fish's weight alone. Open water, sensible tackle and room to play a fish are very different from having to stop one reaching snags. This isn't a blanket recommendation for heavy carp fishing, and the finer options shouldn't be stretched into that role.
Value depends on how well the spool fits your needs. Without a checked current price, calling it a bargain would be guesswork. If 100m neatly refreshes your working line, the format is handy; if you're filling several large reels, compare longer-spool alternatives before spending your quid.
Quick answers
FAQs in full: the bits to sort before spooling up
Is it fluorocarbon? No, this is original Supplex Mono. Don't transfer claims or diameter choices from Supplex Fluorocarbon to this product just because they share a name.
Will 100m fill your reel? Check the capacity marking for the diameter you're buying. Backing can take up spare space, but it can't replace the working line you need beyond a long cast. Allow a sensible reserve rather than filling purely by appearance.
Which strength is best? There's no universal answer. Start with the rod, casting load and venue, then consider the fish and hooklength. Finer line isn't automatically better fishing, and heavier line doesn't rescue an unbalanced outfit. If you're unsure, get advice for your actual swim rather than copying someone else's spool choice.
On paper
Pros & cons
What we like
- Supple design is well suited to manageable float and feeder setups.
- Useful choice of strengths for different coarse-fishing jobs.
- Clear finish keeps things simple across mixed venues.
- Abrasion resistance is a welcome feature for everyday mainline.
Worth knowing
- A 100m spool can mean using backing and leaves less spare line for repeated trimming.
- Mono stretch gives less direct feedback than braid at range.
- Limpness and abrasion resistance don't make the finer options suitable for heavy snag fishing.
Want one?
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Your questions answered
What anglers want to know
The stuff you’d ask your mate on the next peg. Straight answers, no waffle.
01Is Drennan Supplex Mono fluorocarbon?
Is Drennan Supplex Mono fluorocarbon?
No. This is the original clear Supplex monofilament. Supplex Fluorocarbon is a different product.
02Is a 100m spool enough to fill my reel?
Is a 100m spool enough to fill my reel?
That depends on your reel's capacity and the diameter you choose. You may need backing, and you should leave enough working line for casting, fish taking line and trimming damaged sections.
03Which breaking strain should I choose?
Which breaking strain should I choose?
Match it to your rod, casting weight, hooklength, target fish and swim. Finer options suit lighter work; heavier options give more scope for demanding fishing, but no single strength is right for every venue.
What anglers say
The word from the bank
Our read: a sensible all-rounder, with one spool-sized catch. The strongest reasons to choose it are supple design is well suited to manageable float and feeder setups. and useful choice of strengths for different coarse-fishing jobs.; the main trade-off is a 100m spool can mean using backing and leaves less spare line for repeated trimming..
Our take on the feedback
Why it appeals
Checked Sept '26 — “Supple design is well suited to manageable float and feeder setups.”
Best fit
Checked Sept '26 — “Float anglers fishing mixed coarse venues: The supple design and choice of finer diameters make it a sensible candidate for balanced waggler and running-line setups.”
Worth knowing
Checked Sept '26 — “A 100m spool can mean using backing and leaves less spare line for repeated trimming.”
Tackle Index’s take from the product details and fishing fit we checked. We haven’t found enough independent public feedback to call this an angler consensus yet.
Angler score
What our readers rate Drennan Supplex Mono
No angler score yet — nobody's reviewed Drennan Supplex Mono here. Be the first and get the score started.
Owner reports
Own this? Help the next angler.
Quick multiple-choice reports from people who say they own the Drennan Supplex Mono. Not verified purchases, and kept separate from our score.
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