Name: milKit Compact Kit
Brand: milKit
Rating: 4 (1 reviews)

With the revolutionary milKit valve system, installation and maintenance of tubeless sealant becomes a breeze. The solution to combat sealant drying out or escaping! With other tubeless tire valve systems you need to remove the tire to check if enough sealant remains, with milKit you can simply remove the valve core and insert the syringe to check. No mess and faster results!

The syringe holds 60ml or 2 oz of fluid and comes with a flexible connector and a large needle to push through the valve and rubber flaps. There’s also a sealant regulator that screws into the syringe for easy refilling. The needle has an angled end for effective removal of all sealant in the tire.

Patented milKit presta bike valves are made in Germany from anodized high quality aluminium alloy and high performance rubber for the smart flaps.

The standard milKit valves have a usable length of 35 mm (1 3/8 inch), and they work for most road and mountain bike rims except some special high-profile rims. For high-profile rims, there are 45mm, 55mm and 75mm versions of the milKit valves available.

milKit valves can be used with most sealants, but we recommend milKit sealant. This has been specially designed for best results with these valves.

Key Features:

Quick measuring and refilling. The milKit valve system allows to check old and add new sealant without deflating the tire.
No more valve clogging.The patented smart rubber flaps prevent the sealant from entering and blocking the valve.
Easy and clean tubeless installation. No more mess as tires can be inflated dry and sealant added afterwards through the valve.
Smart rubber flaps ensure no air is lost when the valve core is removed and sealant does not block the valves
Use the syringe to easily check if enough sealant remains in your tire
The syringe accurately measures the amount of sealant needed
No more mess as tires can be installed dry and sealant added afterwards through the valve
Kit contains measuring & refilling syringe, valves, and valve core removal tool
2x 35, 45, 55 or 75mm milKit valves
1x measuring and refilling syringe
1x valve core tool
2x milKit rim stickers

Occasionally, without notice, manufacturers change product design and/or specifications.

Tubeless Sealant and Accessories Guide

Riding with tubeless tyres means that you’ll spend less time fixing flats and more time shredding the trails or lighting up the open road. In this tubeless guide we’ll look at all the things you need to get your wheels and tyres rolling without inner tubes.

Tubeless Sealant

Sealing all the little air gaps in your tyres, whether through a puncture or a less-than-perfect tyre/rim seal, tubeless sealant is an essential for every cyclist who wants to ride without tubes. There are a few different options to choose from, but they all work on the same principle: a liquid that solidifies when it leaks out of the tyre to seal gaps and punctures.

While simple latex-based liquids will work as sealants most brands sealants use special formulas and additives to improve longevity and sealing performance. Sealants with particles added are better at sealing larger holes so are ideally suited to mountain bike tyres. Lighter weight sealants are good for road bikes as puncture holes are generally smaller and easier to heal. Some sealants don’t work well with CO2, so check for compatibility if you plan on using a CO2 inflator to seat your tyre.

How much sealant should I use?

The amount of sealant you need to use will depend on the volume of the tyre. Brands will recommend specific amounts for their sealants which will be about 30 – 60ml for road bike tyres and 70 – 150ml for MTB tyres.

The table opposite shows typical sealant quantity recommendations to use as a starting point. If your tyres are a little porous some sealant may leak out. Don’t worry about this, it’s just the sealant doing its job, but you may need to top up with a little extra to be sure that there is enough left to seal any punctures.

Tyre size	Sealant quantity
27.5 x 2.0	75ml
27.5 x 2.4	110ml
29 x 2.0	90ml
29 x 2.4	130ml
700 x 25	30ml
700 x 32	50ml

Tubeless Sealant Accessories

Tubeless Rim Tape

If your wheel doesn’t have tubeless ready rim tape installed, then you will need to tape the rim with tubeless compatible tape. Tape is available in different widths and you’ll need a size that best matches the internal width of your rim.

applying tubeless rimn tape to an mtb wheel

Tubeless Valves

As there is no inner tube the valve attaches directly to the rim of a tubeless wheel. These are usually Presta valves. Make sure that you get ones that are long enough to easily go through the rim of your bike. Longer valves are available for deep section rims. The valve cores tend to block up with sealant after a while so they will need taking out and cleaning and/or replacing from time to time.

Tubeless Conversion Kits

Tubeless conversion kits contain sealant, tape and valves as well as fitting instructions, so these are the best option when converting your wheels for the first time. When buying a conversion kit make sure that you get one with the correct tape width and valve length to fit your wheel.

Sealant Injector

You can pour sealant into the tyre before you finish putting the tyre on, but many people prefer to inject the sealant through the valve. You can use a normal syringe, but specific injectors usually include a valve adaptor that makes the job easier. Some Tubeless Kits include an injector.

injecting sealant into a mountainbike tyre

Tubeless Tyre Repair Kits

While sealant will heal smaller punctures by itself a larger hole or tear in the tyre will need to be plugged or patched. Tubeless plug systems offer long lasting repairs and are very quick and easy to use even at the road or trail side. If you don’t want to have a small bit of the rubber bung showing through your tyre, then you will need to take the tyre off and patch it from the inside.

repairing a puncture in a tubeless mtb tyre

Tyre Inserts

Foam tyre inserts cushion the blows from rock strikes, especially when running low tyre pressures. They are a great way to protect your MTB tyre and rim when riding through rough terrain. Inserts can also help to keep the tyre on the rim more securely to avoid burping air when cornering.

Tubeless Inflators

When you fit a new tubeless tyre, it can sometimes be difficult to get the tyre seated properly on the rim. This is because a normal track pump doesn’t blow the air out quick enough to overcome the initial gaps between tyre and rim. Tubeless inflators allow you to blast a shot of air directly into the tyre to pop it onto the rim.

Tubeless inflators like the original Air Shot need to be pumped up with a separate track pump whereas others combine both track pump and inflator tank. See our range of tubeless inflators

How to Convert to Tubeless

While tubeless systems will save you time in the long run, they do take a little more care to set up.

See our Tubeless Tyre Conversion Guide for more.

2025 Gravel Bikes

milKit Compact Kit