Magic Milk Innertube-Pro Hi-Fibre

Sale price€22,00
Coming Soon

For MTB riders still running tubes, this is the puncture sealant that handles what tubes take the worst — snake bites, pinch flats, slits up to 7 mm. Water-based, lasts the life of the tube, CO2 compatible.

Size: 500ml

Product Features

Magic Milk Innertube-Pro Hi-Fibre
  • Tested in Downhill, Enduro and MTB
  • Water-based: lasts the life of the tube and tyre
  • Compatible with CO2
  • Seals up to 7 mm pinch flats and tube punctures

For innertube tyre systems. For MTB tubeless, use Magic Milk Tubeless-Pro Hi-Fibre.

Instructions for Use

Magic Milk Innertube-Pro Hi-Fibre

Fitted with OKO's patented Cap technology, an industry first, applying sealant has never been easier. After three years of development, the OKO Cap utilizes the latest material technogies to fit seamlessly with your valve system. In the workshop on or on the go, outfitting your tyres with bike sealant's best kept secret couldn't be easier.

Product Description

The same fibre technology that sealed AON Racing's tubeless tyres — rebuilt for riders who run tubes. Innertube-Pro Hi-Fibre handles snake bites, slits, and punctures up to 7 mm. It's CO2 compatible, works from −20°C to +50°C, and runs at the pressures DH and enduro riders actually use. The strongest innertube puncture sealant in the Magic Milk line.

How it seals

The fibre-reinforced formula works the same way it does in the tubeless version: when air escapes, fibres rush to the breach, pack the hole, and bind into a durable seal — not a temporary patch. It doesn't ball up inside your tube. It doesn't migrate and dry out under hard riding.

Specs

  • Max puncture sealed: 7 mm — including snake bites and slits
  • Pressure range: 30–120 psi
  • Temperature range: −20°C to +50°C
  • System: innertubes — MTB, DH, enduro
  • CO2 compatible
  • Non-corrosive — safe for tubes and rims

Why fibre-reinforced

Most innertube sealants are liquid patches — they fill a hole and hope the pressure doesn't push them out. The fibres in this formula cross-link under pressure, turning the seal from a plug into a bond. It's the difference between a tube that limps home and one that finishes the descent.

Bottle Size

500 ml
For those who require a bit more for race days or workshops, the 500ml bottle is a great option. Offering multiple top-ups, it’s perfect for serious riders who need to go through several repairs on race day or for bike shops handling multiple repairs in a short time.

Usage Info

  • For use with removable-core Presta, and all Schrader, tube valves.
  • Lasts as long as your tube or tyre.
  • For MTB Tubed tyre systems. (For MTB Tubeless, use
    Magic Milk Tubeless-Pro Hi-Fibre).

Dosage & Quantities

  • 20-24" 140ml
  • 26" / 650B / 700c 160ml
  • 27,5"-29" 180ml

Frequently asked questions

HI-FIBRE PUNCTURE SEALANT FOR INNERTUBES

Same fibre-reinforced approach as the tubeless flagship, adapted for innertubes. When a snake bite or sharp impact opens the tube, the quick-seal fibres pack the hole and bind fast. It seals punctures up to 7 mm instantly — slits, pinch flats, and standard holes. The formula is water-based and stays active for the life of the tube.

SEALS 7MM SNAKE BITES

Built specifically for the punctures that end rides — snake bites and sharp impacts up to 7 mm. Water-based formula, CO2 compatible, safe for tubes, tyres and rims. Seals in seconds so you keep moving.

  • 5 stars: 5 (63%)
  • 4 stars: 3 (38%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
m
mark moorhouse
Very impressive tyre sealant

I have to say that I have tried quite a few of these tyre sealants and most of the time it’s never worked well enough to keep you moving and not have to stop and repair the puncture or keep pumping more air into the tyre until you reach your destination and then you can finally fix the puncture.I did my usual stuck the bottle in my rucksack and completely forgot to insert some solution into the inner tube. On getting my bike out of my car as I drive halfway and cycle the rest, I discovered that I had a full flat tyre on the rear. I immediately pumped air and heard the hiss from the tyre and quickly located the puncture. Rather than spending ages changing out the inner tube I took out the magic milk. Removed the valve in my presta inner tube and plugged in the tube and started to squeeze solution into the inner tube.I then inserted the valve and started pumping. Initially the puncture started hissing but I spun the peddles and got the back wheel flying round. To my amazement the hissing stopped. I pumped up the tyre to 100 PSI and it held, no hissing at all.I then cycled all the way into work, 12 miles with the tyre going down ever so slightly but not enough to warrant me to stop and add more air.Very impressive performance from the sealant. It really has worked out and I’m going to leave alone to see how long the repair lasts before I have to replace the inner tube.The bottle of magic milk has levels written down the label seam so you can see how much to fill the inner tube with.It fitted over the valve perfectly and although I didn’t use the tool supplied with the bottle to remove the inner tube valve as I have a very good tool in my repair set, I’m sure I could have used the one supplied on the lid to remove it without issues.Overall very impressed and highly recommend.

J
John
Probably Stands A better Chance Of Sealing A Punctured Tube

I have to say I am not convinced that these tyre sealants are the answer to never getting a puncture, I used to swear by the green stuff especially as I never had a flat using it, that was until I did, just a big thorn but the sealant did not work, I pumped the tire up, turned the wheel so the sealant could smother the the leak, but half a mile down the road it was flat again, luckily I always carry a spare tube so was able to swap it and get going, but the sealant made a real mess where it had escaped into the tire and over the rim.This Magic Milk sealant has a high fibre content, so technically should do a better job than the runnier variety, but that I will not find out until I actually get a puncture which could be months away, another thing to add is the weight, it does weigh quite a few grams so the wheels will be heavier, maybe a problem for the weight conscious rider but I can cope with that.So in conclusion it's worth using because if it works the ride will not be interrupted by fixing a flat, more so if your out on a muddy cold winter ride, but always carry a spare tube and never trust in tyre sealants because they don't fix every puncture, I never mentioned the pinch flat I also manage to get, the rip in the tube was far to big for any sealant to fix, but I carry a spare tube so could still carry on my ride, but once again it was a very messy tube change.

P
Pete B
Does the job

Worked brilliantly. Took me less than 5 minutes to sort out a slow puncture.

L
LDC
Effective Tyre Sealant

I've been using this tyre sealant for a while now, and I really appreciate its ease of use. The quality is impressive, sealing punctures quickly and reliably. It offers great functionality, making it a solid choice for my biking needs. The size is convenient for refilling, and I feel it's excellent value for money given its durability.

A
Amazon Customer
Effective tyre sealant that inspires confidence on the road

I applied this sealant shortly after receiving it and found the process simple and mess free. The formula spreads quickly within the tyre and sealed a small puncture during testing without needing further intervention. It’s reassuring to know it works while driving rather than requiring immediate roadside repairs.I checked the tyre pressure after use and it remained stable, indicating the seal held properly. This is a practical item to keep in the car, especially for longer journeys where immediate access to tools may not be available.

C
COdon
Reliable sealant for a smooth ride

It offers great value as it lasts for the entire life of a tyre. The application is easy, which is a definite plus to keep things straightforward.I have not had much experience with it yet due to the wet weather, but so far so good. The performance seems promising, and I feel like it will do the job when needed.And so, yes, I am pleased with the sealant and look forward to putting it to the test once the conditions improve and enjoy smooth rides without worrying too much about punctures. Seems like a solid choice to me

A
Amazonian
This stull really is magic.

This stuff really is magic. Been using tubeles tyres on. my mountain bike for arount eight yeras now and would never go back to inner tubes. This Magic Milk is easy to add through the tyre valves and does a great job on all kinds of punctures. No more removing wheels to mess about patching tubes and having to replace the tyre and all the botrher that goes with it. Just keep topped up with this latex type liquid and ride. When punctures occur the liquid fills the hole and solidifies on contact with air, no further action is required other than a small amount of inflation if necessary.

A
A Customer
Fixed up my BMX with this

Price £17 for 500ml.I'm a big fan of a similar product to this called Slime and so I can draw comparisons between the two. I think some of my existing tires are more slime than tire at this point and these type of automatic sealants are the best thing that ever happened to cycling.I mean you get a puncture on a rear wheel and it can be a total nightmare getting the wheel off to change the inner tube and patching it is also pretty tricky while its still attached. This is even more true of e-bike with all the electrics and motor to worry about as well. I would prefer never to have to do that.This stuff seals punctures automatically and I've even had them happen while on the road miles from home and then you hear the air escaping and then it stops and you pump the tire up again and you can get another 6 months before it happens again. I mean its just amazing compared to what would have happened without it.So this product compares well to slime. It fixed up a particularly nasty puncture on my BMX which slime didn't manage to. This is the hi-fibre version and so can fix slightly larger holes. It worked here.The bottle is nice in how the applicator tube folds back in to the bottle and the whole experience is good. It isn't the same lurid colour as slime which means that although you notice less if any is spilling out or getting stuck in the valve it also means you don't need to worry quite so much about getting it on your clothes etc.It flows a little easier than slime and does seem more liquid to me.The amount to use is a bit confusing - I had to visit their website to get the advised dose for each tire size and there is a measuring thing on the bottle but to be honest its pretty useless because depending which angle the bottle is at the amount shows wildly differently. I just guestimated it based on the total size of the bottle.They provide what should be a nice valve tool in the cap, on some ways its higher quality than the one provided with slime (metal vs plastic) but the handle part of it is too big to work with BMX spokes so I was completely unable to use it to remove the valve. Fortunately I had another valve tool nearby which I used for this task.Overall it seems like really good stuff but it is also significantly more expensive than slime.