Muc-Off Big Bore Lite Tubeless Valves (Pair)

• Precision CNC machined from 7075 aircraft grade aluminium
• Coreless, ball valve system opens and closes with integrated lever
• Stainless steel ball valve with seals and o-rings
• Maximum air flow efficiency delivers up to 230% higher flow than Presta valves
• Universal valve head is compatible with most screw on and push fit pumps
• Serviceable design with spanner flats on the head, lever and body
• 4-way tyre insert air flow base is compatible with most tubeless inserts

1. First, remove the ball valve body, cap, locking ring & O-ring from the valve stem.
2. Then choose the correct rubber base for your rim type. Rims with a curved rim section will use the circular rubber base. Rims with a square rim section will use the square rubber base. Slide this down to the bottom of the valve stem. (If your rim has a larger valve hole and the smaller circular fitment is too loose, use the larger circular fitment to plug the hole).
3. Now push the valve stem into the hole in the rim and push it right the way through. Then place the rubber 0-ring onto the valve stem and slide it all the way down until it meets the rim.
4. Screw the locking ring onto the valve stem and tighten down above the o-ring. This sandwiches between the locking ring and the rim.
5. Firmly tighten the ball valve body onto the stem using your fingers. Now use a 4mm hex to hold the stem base in place inside the rim, and with an 8mm spanner, tighten the valve body to the stem with a quarter turn. Be careful not to over-tighten, which could lead to damaging the O-Ring. Rotate the body to ensure the lever is pointing towards you. TIP - Use some thread lock such as our Loc-On (available soon!) for an extra secure seal.
6. Now push firmly down on the valve base inside the rim as you tighten the locking ring. Keep pushing until the locking ring is hand-tight and the rubber o-ring squashes out slightly. This way you know you've created a good airtight seal. TIP - Don't over-tighten as this can cause leakage.
7. Rotate the lever open and fill with Muc-Off Sealant and inflate to your desired PSI! Remember to close the valve so the arrow on the lever is pointing up before removing your pump.

You're now ready to roll. To adjust psi on the fly simply open the valve slightly to release air to your desired pressure.

CHOOSE YOUR FITMENT

• LITE: Fitment: Presta Pump | Presta Rim | 230% Airflow vs Presta Valves
• HYBRID: Fitment: Shrader Pump | Presta Rim | 254% Airflow vs Presta Valves
• LUDICROUS (Coming Soon): Fitment: Shrader Pump | Shrader Rim | 264% Airflow vs Presta Valves

CHOOSE YOUR COLOUR

• Choice of 6 eye-popping anodised colours (Black, Iridescent, Red, Blue, Orange or Pink). 60mm only available in Black.

CHOOSE YOUR SIZE

Available in 4 sizes to valve stems to suit different rim depths. The length of valve you need will depend on the height/depth of your rim. You will need to ensure that you have enough threaded stem valve poking through the valve hole to not only secure it with the O-Ring and Lock ring but you will also need to be able to screw on the top half of the valve.

• 30mm (Small)
• 35mm (Medium)
• 45mm (Large)
• 60mm (Extra Large - Available in Black Only)

SIZE GUIDE