Monday | 9.00am - 5.30pm |
Tuesday | 9.00am - 5.30pm |
Wednesday | 9.00am - 5.30pm |
Thursday | 9.00am - 5.30pm |
Friday | 9.00am - 5.30pm |
Saturday | 9.00am - 5.30pm |
Sunday | 10.00am - 4.00pm |
Bank Holidays | 10.00am - 4.00pm |

Peaty's x Chris King Tubeless MK2 Valves 42mm in Mango
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 air flow 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 new bike.
INSTRUCTIONS
- Remove valve cap, o-ring and lock nut.
- Insert valve through valve hole in rim.
- Push the o-ring onto valve stem.
- Thread the lock nut onto valve stem.
- Hand tighten lock nut until firm.
- Screw on valve cap.
All UK Mainland Bike Deliveries Over £999 - Free Bike orders are sent via TNT/FedEx with estimated delivery within 1 working day after quoted dispatch time (For Scottish Highlands, Northern Ireland, Isle of Man and the Channel Islands deliveries please allow an additional 1-4 working days).Bike orders under £999 will incur a £20 delivery fee.
Free Delivery On Orders Over £50.00 - When you spend more than £50.00 at 99 Bikes deliveries to a UK mainland address will be free (excludes bikes & large items).Certain regions and territories of the UK will incur additional charges, details of which can be found on our delivery page.
Click & Collect Orders -Please be aware Click & Collect orders may take some time to fulfil. We advise not to travel to your chosen store until you have been notified that your order is ready for collection.
At 99 Bikes our priority is to ensure that you are highly satisfied with your purchase. In the unlikely event that you aren't, we offer a 30 day online return policy* in which you can receive a full refund. Any item including bikes (with the exception of food) can be returned to us for any reason provided it is received by us in an unused and resalable condition in or with its original packaging which must be undamaged.
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