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Description
Sufix Super 21 Mono Line - 300MSufix Super 21 Mono Line 300m Millions of anglers worldwide consistently choose mono fishing line over braid due to its ease of handling, simpler and stronger knots. The Sufix Super 21 Fishing Line offers mono enthusiasts exceptional low stretch properties, boasting up to 21% less stretch than competing brands. This reduced stretch enhances fish hooking capabilities, minimizing missed opportunities. Low stretch during a strike is crucial, as fish
Sufix Super 21 Mono Line - 300m
Millions of anglers worldwide consistently choose mono fishing line over braid due to its ease of handling, simpler and stronger knots. The Sufix Super 21 Fishing Line offers mono enthusiasts exceptional low-stretch properties, boasting up to 21% less stretch than competing brands. This reduced stretch enhances fish hooking capabilities, minimizing missed opportunities. Low stretch during a strike is crucial, as fish exploit any chance to dislodge hooks, and line stretch provides such an opportunity.
With superior knot and shock strength, Super 21 is perfect for casting lures and natural baits. The 300-meter spool ensures ample line for your favorite reels. Its small diameter allows for more line capacity compared to similar mono lines, ideal for targeting larger, more resistant species.
- Low stretch for improved hook setting
- Superior knot and shock strength
- 300-meter spool for ample line supply
- Small diameter for increased reel capacity
| PRODUCT CODE | DESCRIPTION | WEIGHT (LB) | DIAMETER |
|---|---|---|---|
| SUFMA4300CL | SUPER 21 300M 4LB CLEAR | 4 | 0.16mm |
| SUFMA6300CL | SUPER 21 300M 6LB CLEAR | 6 | 0.18mm |
| SUFMA8300CL | SUPER 21 300M 8LB CLEAR | 8 | 0.20mm |
| SUFMA10300CL | SUPER 21 300M 10LB CLEAR | 10 | 0.25mm |
| SUFMA12300CL | SUPER 21 300M 12LB CLEAR | 12 | 0.30mm |
| SUFMA15300CL | SUPER 21 300M 15LB CLEAR | 15 | 0.35mm |
| SUFMA20300CL | SUPER 21 300M 20LB CLEAR | 20 | 0.40mm |
| SUFMA30300CL | SUPER 21 300M 30LB CLEAR | 30 | 0.45mm |
| SUFMA40300CL | SUPER 21 300M 40LB CLEAR | 40 | 0.50mm |
| SUFMA50240CL | SUPER 21 240M 50LB CLEAR | 50 | 0.60mm |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 1
There seems to be a chronic problem with the provided dispensing pump.
Size: 1 Gallon + Tool, Set name: Off-Road Formula
I looked at online reviews of the product performance and was impressed by its purported ability seal tire punctures. While the product may (or may not) perform well, the provided dispensing pump is pathetically unsuited for the application and it is impossible to clear the pump once the material clogs the small dispensing port. Some of the reviews indicated this but i assumed that they were not very mechanical inclined customers. The product, by design, has particulates, of varying sizes, suspended in the liquid sealant. The port on pump is very small and easily becomes blocked with the sealant and particulates that cannot be cleared; even when following the instructions to do so. It is very irresponsible for the manufacturer to continue selling this item with inevitable relative failure of the pump as this is the only way to get the sealant into a tire.
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Reviewed in the United States on January 2, 2025
★★★★★ 5
Good for ebike tires
Size: 1 Gallon + Tool, Set name: Small Tire/Bicycle Formula
Got it for my son’s older ebike that my wife rides now. He kept on popping tubes, maybe because of his weight. Anyhow, I fixed it up for my wife and put some FlatOut in it to prevent flats. Seems to work so far. Got the off road FlatOut for my ebike’s fat tires. Easy to add to the tires. The pump clogs up but it’s easy to clean. I will always add this to all tires moving forward!
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Reviewed in the United States on April 4, 2026
★★★★★ 5
Easy to use and works great
Size: 1 Gallon + Tool, Set name: Off-Road Formula
Easy to use
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Reviewed in the United States on April 22, 2026
★★★★★ 5
This product work so well it will surpass your expectations it did mine
Size: 1-Pack (32 oz)
This product is well worth the price. I had a small branch puncture a hole through the sidewall of a tire on my 4 wheeler. The hole was at least 3/8” and was done by a tree limb so the edges were jagged. I followed instructions on the product yet the whole time I thought I was wasting my time and the product most likely. I was pleasantly surprised and wrong. It sealed as soon as re inflated the tire and hasn’t leaked down in over 6 months now. I was so impressed I put 2 packs in everything I drive on road and off road.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Best fix for flats that I've ever used
I have a large zero turn mower that is 10 years old and had a slow leak in the front tire. I tried fix a flat but even a full can would barely get any of the product into the tire and would end up oozing around the valve. After a long search, I found FlatOut. I was reluctant at first because it required removing the valve core, which I had never done. (I'm a 60+ year old female.) But the ratings were so high and the fact it was made with Kevlar, changed my mind. And I am so glad!! The instructions were so simple, core valve came right out (and the tool and new core valve is included), the tube that you pull from the bottle, fit snuggly on the valve stem yet was not difficult to put on. I elevated the bottle, added the amount I thought it needed, removed the tube, pushed it back in the bottle, replaced the cap, and then put the new valve stem back in. It only took a few minutes. And no mess! I had put on rubber gloves, expecting some to spill but it's a thick liquid and does not seep out anywhere it's not supposed to! I filled the tire with air and checked it each day for a week to make sure there was no leak before I used it. I then mowed some rough ground that is hilly and rocky and when I was done, the tire was perfect. I was so pleased I did the same thing to the other tire that never lost any air because I didn't want to wait for a leak.
BUY THIS PRODUCT if you are tired of messing with slow leaks or flat tires! I will never use anything else. I purchased a package of core valves and taped them on the bottle so I'll have them when needed! I would give this product 10 stars if I could. It states on the bottle this product was used in the military, so it really has been tested. Thank you FlatOut for a product that actually does what it says!
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Reviewed in the United States on June 15, 2023
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