OKO X-Treme Dirt Bike for MTBs (and off road motorbikes)

X-Treme Dirt Bike Range

The Ultimate Off-Road Tube Tyre Sealant
Seals slits, snake bites and holes like no other product
 Deals with slits and holes up to 7mm (off road motorbikes: 9mm)
Lighter and freer-flowing, CO2-friendly formula
The Choice of Winners
Finish your ride when others fall by the wayside


NEW X-Treme Dirt Bike is a genuine step forward in tyre sealant performance – a real breakthrough product that fights bigger holes and even slits.

Designed for the needs of off-road competitors and weekend riders, it is the difference between making it home and being left stranded by a ‘snake bite’/ pinch flat.

It has been tested in the most demanding MTB, downhill, extreme and cross-country events and has been the difference between winners and losers.

One 800 ml bottle will protect two bikes, with enough to spare.

Like OKO Puncture Free Bike, it is also perfect for full UST wheel/tyre tubeless conversions in the case of those who will be putting their bikes through extreme tests. Other water-based sealants may call themselves ‘tubeless’ – and yes, you can use X-Treme Dirt Bike if you have a perfect bead/rim seal: but our advice is, use OKO Magic Milk if you are using ‘tubeless ready’ tyres).

 800 ml bottle deals with two bikes: for 26” MTB or Cross Country tyres you only need 160ml for ultimate protection.

Simple fitting, using the valve core remover and filling tube supplied in every bottle cap.

25 litre drum is ideal for retailer and team service workshops: the heavy-duty drum pump is a one-time purchase and can be rinsed out again and again for repeated use in filling tyres rapidly. It uses the unique OKO Bike drum pump with adjustable dosage, plus Schrader and Presta screw fittings.


Not latex-based
Much longer effective life
Combats larger punctures than any other sealant
Seals multiple holes
Contains corrosion inhibitors
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 INNER TUBES and FULL UST TUBELESS WHEELS/TYRES, with Schrader or removable-type Presta valves.

(‘Tubeless Ready’ tyres require a rim strip, and OKO Magic Milk sealant: check the compatibility of your proposed rim and tyre combination before attempting).

Colour: Natural Off-White. Viscous. Low Odour.

20-24″ MTB: 140ml
26” MTB: 160 ml
29″ MTB: 180 ml

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

OKO X-Treme Tariff Number: HS 3824 99 96 99
OKO Pressure Application Pump Tariff Number: HS 8413 20 00 90

OKO X-Treme Dirt Bike is designed for off-road riding and is not recommended for high-speed on-road cycling: for that, use the lightweight OKO Magic Milk and for all-purpose general bike use, select OKO Puncture Free Bike.

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.


Send us an enquiry about this product

This is a unique website which will require a more modern browser to work! Please upgrade today!