Peatys Tubeless Valve 42mm MK2 Mountain Bike


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With design, sustainability & quality running right to the core, there’s only one company we could work with on our valve colours - Chris King! With our valves for life guarantee and their stunning colourways, your bike is in for a real treat for years to come.

Made from premium lightweight, high strength 7075 aluminium, Peaty’s MK2 Tubeless Valves fit most tubeless setups from MTB to road and cyclocross, including carbon, enduro and DH rims.

Our unique x-cut base has been designed to work with all tyre inserts. The channels cut into the base of the valve allow air and sealant to pass through when inserts are pushed up against them. Unlike most other insert-compatible valves, our valves have a ‘straight-through’ design so there’s no reduction of sealant or airflow when tyre inserts are not used. 

Fitting couldn’t be easier. integrated o-rings prevent the lock rings from scratching your precious rims and large soft rubber bases easily create an airtight seal. 

Designed by riders, for riders. Our valves come as standard with an integrated valve core remover cap and spoke key cap (for standard 3.4mm spoke nipples). This makes tightening loose spokes and topping up with sealant a breeze, either in the workshop or out on the trails. 

Crushed a rubber or snapped an o-ring? No problem, check out our maintenance kits to spruce up your valves when swapping to your next set of wheels or a new bike.

  • Ten chris king colourways... and black!
  • Valve core remover cap makes removing the valve core to top up sealant a breeze
  • Smoked black valve cores customers benefit from the valve for life scheme 
  • Fits most road, gravel and mtb tubeless rims including carbon
  • Rubber base creates an airtight seal on valve holes up to 8mm in diameter
  • Flat sided lock ring makes tightening the thread a breeze 
  • Rubber o-ring to prevent the lock ring from scratching your rim
  • Made from lightweight anodised 7075 aluminium 
  • Integrated spoke key cap (for standard 3.4mm spoke nipples) for trailside emergencies
  • Unique four-way x-cut base now works with all tyre inserts 
  • Sold as a pair

  1. Remove valve cap, o-ring and lock nut
  2. Insert valve through valve hole in rim
  3. Push the o-ring onto valve stem 
  4. Thread the lock nut onto valve stem
  5. hand tighten lock nut until firm
  6. Screw on valve cap