Milkit Replacement Valve Cores 45 mm

The revolutionary milKit tubeless valve system makes the maintenance of tubeless tires quick, easy and clean.

- Measure, change and top up sealant while maintaining air pressure in the tire.
- Close the rubber flaps at the bottom of the valves to prevent the sealant from clogging the valve
- Easy tubeless installation: milKit valves maintain the air in the tire without the valve core installed - you can add the sealant after inflating the tire without making a mess.

Swiss-engineered and made in Germany, the product is convincing because of its high-quality and lightweight aluminium valves as well as the elegant design with intelligent detailing.

The valves fit into all common rims, including that of road, gravel and MTB tubeless wheels

MilKit products are available with 35 mm, 45 mm, 55 mm and 75 mm valve length.


- 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

How to use milKit valves & syringe

This patented system enables clean and easy tubeless tire setup.

1.Install valve and screw out the milKit valve core
2.Pre-inflate your tire up to 22 psi (we recommend the milKit Booster) – the rubber flaps ensure no air is lost even with the valve core removed
3.(For maintenance rather than installation of new tire) Extract old sealant from tire with the milKit syringe to measure remaining amount and check quality
4.Measure out the correct amount of sealant and inject using the siringe
5.Screw the valve core back in, inflate tire to full pressure until the tire fully jumps onto the rim and you’re ready to ride!

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 60 ml 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 aluminum 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.

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