OKO Magic Milk™ for tubeless bikes

Magic Milk Hi Fibre Range Med ResMagic Milk Tubeless Range Med Res

 THE product for tubeless-ready conversions
The lo-fat™ tyre sealant
 NEW Hi-Fibre race version is also ideal for tubular or tubed road race tyres, and downhill use
Lightest real-world product in the market
Seals holes up to 3 mm (tubed)/ 6 mm (Tubeless)/ 7mm (Hi-Fibre)
Finds the little crevices between bead and rim: clings to the sidewalls, sealing porosity
Synthetic latex formula is allergy-free; and wheel, tyre & skin-friendly
Lasts longer than other latex milk products: does not ball up – top up and carry on…
NOW also in larger bottle sizes and a workshop can, due to popular demand


OKO Magic Milk™ is a step forward for latex-based free-flowing liquid tyre sealants. It can be used with ‘tubeless ready’ or full UST tubeless tyres (for maximum puncture proofing on UST we recommend Puncture Free Bike or X-Treme)

It is super-light, with a dose of 30-80ml per tyre in most sports to mountain bikes, depending on size.

Used and recommended by Bart Brentjens’ CST postNL Bafang Team, World Cup Winning SCOTT-SRAM and the SCOTT Development MTB Racing Teams, and No. 1 Womens  GHOST  Factory Racing in World Cup MTB/XC; KHS Factory Racing (USA MTB/Downhill); Gamux Racing in World Cup Downhill; Zappi Racing Team (UK) and Elevate KHS (USA) in Road Racing; and KTM Alchemist Selle SMP Dama in World Cup CycloCross and Marathon MTB. All the teams switched of their own accord from the best-known tubeless sealants.

See our Facebook page and Instagram page for the latest news about this product’s amazing race successes!

250 ml bottle deals with two regular mountain bikes, or four racing bikes: for 26” MTB tyres it is just 60-80 ml per tyre. NOW in new 65ml ‘backpack pack’, 500ml and 1 litre sizes, by popular demand: and a 5 litre workshop can with 150ml injector! (the first in latex sealants). 

Select the NEW Hi-Fibre race sealant variety for high-pressure road tubes/tubulars/tubeless: and for low-pressure downhill/enduro/gravel racing.

Simple Presta/Schrader fitting, using the new bottle cap: or use an OKO Tyre Sealant Injector (especially when using removable-core Presta valves) for easy, accurate measuring.


Latex-based for sealing wheel/tyre bead imperfections
In practice, the lightest sealant you can use
Longer effective life than competitors – usually 6-9 months before you need to top up
Advanced synthetic latex formula – no ammonia or allergies; will not rot tyres or inserts; or damage wheels
Contains corrosion inhibitors
Washes off with water
Non Hazardous


Non Corrosive: Non Flammable: Non Hazardous (not excluded from air shipments). 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 & 650B 60-80 ml
700C, e-bikes & Cross 50-60ml
• 27.5/29″ MTB 80-120ml (Downhill: up to 140ml)

For maximum accuracy, for easier use with removable 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 Tyre Sealant 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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