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OKO Magic Milk™ for all tubeless bike tyres



•NEW Formulae and NEW Hi-Fibre race variety!

• ‘BackPack Pack’ mini-bottle for repairs on the trail
Seals holes of 6mm (Hi-Fibre up to 7mm)
Finds the little crevices between bead and rim
Synthetic latex formula is wheel, tyre and CO2 friendly
Coats the sidewall like no other

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OKO Magic Milk™ Tubeless is a step forward for latex-based free-flowing liquid tyre sealants. It is designed for ‘tubeless ready’ or full UST tubeless tyres (also usable in tubes: for maximum puncture proofing on UST and MTB tubes we recommend Puncture Free Bike or X-Treme)

The <Lo-Fat>™ tyre sealant, it is super-light, with a dose of 30-120ml per tyre in most road to mountain to downhill bikes, depending on size.

NEW Magic Milk™ Hi-Fibre race sealant is a premium product, designed to deal with both the high pressures of road race bikes (tubeless, tubed or tubular): and also the low pressures of downhill/enduro/gravel racing.

Magic Milk™: the choice of leading World Cup contenders including the Mens and Womens MTB World Champions:

Legendary Olympic Gold Medallist Bart Brentjens switched his hugely successful  CST Sandd American Eagle MTB Racing Team to us from 2019, saying, “I’m convinced about your sealant quality“…

GHOST Factory Racing, a team of female National MTB Champions, is using Magic Milk™ Hi-Fibre. Anne Terpstra was #1 in 2019, and the team topped the UCI World Cup rankings!

KTM DAMA CX SMP Team, UCI Cyclocross and Marathon MTB, have converted to us as well : they race around Europe and Nicolas Samparisi won the Sardinia Rally.

KHS Factory Racing, leading US MTB/Downhill team,  are now using us: see their video on our @OKOBike Facebook page

Gamux Racing, a leading force in Downhill, also switched from the traditional tubeless brand to Magic Milk™ Hi-Fibre (“your Milk is awesome!” – Dominic Tinner, Team Manager).

Zappi Racing, a UK/Italian U23 Road Race team sponsored by Holdsworth Bikes, uses Magic Milk™ Hi-Fibre in tubeless, tubed and tubular tyres – (“is going great!” Flavio Zappi)

Elevate KHS Pro Cycling Team, a top American Road Race unit who won the Tour de Taiwan 2020, score podium after podium with us.

David Rosa, 8-time Portugese MTB Champion, made his own Magic Milk video with a dramatic tyre spiking followed by a forest run!


Both Magic Milk™ Tubeless and Magic Milk™ Hi-Fibre are available in the full range of sizes:

65ml bottle for emergencies – carry one or two in your backpack with a CO2 inflator to get you out of trail trouble

250 ml bottle deals with one MTB or two Road bikes

500ml bottle is over 5% bigger than the US 8 fl oz brands – better value

1 Litre bottle is great value and over 5% bigger than the 1 Pint brands

5 Litre Can is perfect for race teams and service workshops: 33% more than 1 US gallon and no inaccurate/wasteful plastic pumps: you get an OKO Injector with each can for precise, clean dosage

Simple bottle/valve stem fitting, using the new resealable tapered cap: screw it over a removable-core Presta valve stem or fit inside a Schrader stem. Or squeeze into the partially-mounted tyre.




Latex-based for sealing wheel/tyre bead imperfections
• Stickiest product there is: seals the sidewall porosity
Longer effective life than competitors – usually 6+ months before you top up in mild climates: will not ball up inside the tyre, dries as an even layer. Can be topped up so you don’t need to strip off the tyre.
Advanced synthetic latex formula – will not rot tyres or damage wheels and is safe for the many latex allergy sufferers
Contains corrosion inhibitors and does NOT give off ammonia
Washes off with water
Non Hazardous


Non Corrosive: Non Flammable: Non Hazardous (not excluded from air shipments unlike some ammonia-containing products). Washes out of the tyre if required.

NO ADVERSE AFFECT UPON TYRES OR RIMS (contains anti-corrosion agents).

WORKS WITH TUBELESS READY and FULL UST TUBELESS WHEELS/TYRES, with Schrader or removable-type Presta valves. (if you have non-removable Presta valve cores, pour Magic Milk™ into tyre well then mount tyre onto rim).

For ‘tubeless ready’ tyres on standard rims, always use a rim strip plus OKO Magic Milk™. Shake the tyre/wheel combination vigorously from side to side at each point to force the sealant into the little gaps between bead and rim, and into the tiny holes in the porous tubeless ready tyre sidewalls. Also spin the tyre on the wheel for a prolonged period. Follow tyre and wheel manufacturer instructions.

(For tyres with inner tubes, use OKO Puncture Free Bike or OKO X-Treme)

Colour: White. Free-flowing. Low Odour (no nasty ammonia smell).

Road Racing: 30-50ml
26” MTB: 60-80ml
• 27.5″ MTB/XC: 80-100ml
29″ MTB: 100-120ml
• Downhill use: 100-140ml

For maximum accuracy, for easier use with removable-core Presta valves, and for a host of workshop uses, use the OKO Tyre Sealant Injector.

OKO sealant Tariff Number: HS 3824 99 96 99
OKO injector Tariff Number: HS 8413 20 00 90

No risk and safety labels or warnings are required since this product is not classified as hazardous under current regulations. Normal safety precautions should be taken: wear gloves and protect eyes. Rinse product off any clothes that it may be spilled upon. Keep away from children. If swallowed, see a doctor.


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