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Big Bore Lite Tubeless Valves

Name: Big Bore Lite Tubeless Valves
Brand: Muc-Off UK
SKU: 21117
Price: 33,75 EUR
Availability: InStock

SKU Code: 21117

Introducing our latest innovation in tubeless valve technology: The Big Bore Valve range. Engineered with precision and designed to deliver maximum inflation simply and efficiently, this patent-pending valve sets a new standard and is the benchmark in high air flow tubeless tyre systems with a revolutionary ‘Straight through’ internal design, which means no clogs and maximum airflow fire power.

€33,75 ~~(€45,00)~~

What size do I need?

Select your manufacturer and rim model below:

Manufacturer: Rim Model:

OR

Enter your rim depth in millimeters (mm): Show me how

To get the right sized valve please measure the vertical distance from spoke hole to where you're tyre meets the rim, as shown below -

mm

Free delivery over €60

Save 25% on Hey Dipstick when bought with a Big Bore Valve. Add both items to your basket for the discount to be applied at checkout.

Pairs great with:

Precision Tubeless Repair Capsule - Black

The ultimate backup for those gnarly punctures

€21,00

Eurobike 2025 Award Winner! Our Big Bore Tubeless Valves were recognised for their game-changing design – built to stay clog-free and make sealant top-ups quick, clean, and easy.

Unrestricted Air Flow

7075 Aircraft Grade Aluminium

Pressure Control On The Fly

Quick & Easy Setup

Introducing our latest innovation in tubeless valve technology: The Big Bore Valve range. Engineered with precision and designed to deliver maximum inflation simply and efficiently, this patent-pending valve sets a new standard and is the benchmark in high air flow tubeless tyre systems with a revolutionary ‘Straight through’ internal design, which means no clogs and maximum airflow fire power.

Presentamos nuestra última innovación en tecnología de válvulas sin cámara: la gama de válvulas Big Bore. Diseñada con precisión y diseñada para ofrecer un inflado máximo de manera sencilla y eficiente, esta válvula con patente en trámite establece un nuevo estándar y es la referencia en sistemas de neumáticos sin cámara con alto flujo de aire, con un revolucionario diseño interno "directo" para una máxima potencia de flujo de aire.

Con un sistema de válvula de bola integrado de última generación, la válvula garantiza un flujo de aire ultrarrápido, lo que acelera el proceso de llenado del sellador. Dile adiós a las molestias de las válvulas sin cámara tradicionales que se obstruyen y requieren que se retire el núcleo de la válvula para llenar el sellador y lograr un flujo de aire suficiente durante la configuración sin cámara.

Nuestro Big Bore Lite ofrece hasta un 230% más de flujo de aire que las válvulas Presta tradicionales gracias al diseño de orificio recto.

Con nuestra construcción de válvula de bola y palanca integrada, puede abrir y cerrar rápidamente la válvula para un control del flujo de aire sin esfuerzo e incluso ajustar la presión mientras conduce.

Fabricada con aluminio 7075 mecanizado CNC de grado aeronáutico con una válvula de bola de acero inoxidable, esta válvula totalmente útil está diseñada para soportar los viajes más duros, sean cuales sean las condiciones.

Full Bore, No Core

It raises the bar for high air flow tubeless tyre systems, with a revolutionary 'Straight through' internal design for maximum airflow.

Join the tubeless revolution with up to 254% increased airflow for faster inflation and efficiency.

Experience no clogging, simplified tubeless set up and maximum airflow with our innovative coreless valve with integrated stainless-steel lever operated ball valve system.

The straight-through design delivers up to 254% greater airflow than Presta valves – Supercharging tubeless set ups and getting you back to the action fast.

The integrated lever opens and closes the valve for micro-adjustments to pressures whilst you’re riding, so you can adapt to changes in the terrain or conditions.

Precision CNC machined from 7075 aircraft grade aluminium.

Featuring a universal valve head that’s compatible with most screw on and push fit pumps, as well as a 4-way tyre insert air flow base that’s compatible with most tubeless inserts.

With spanner flats on the head, lever and body, this valve can be serviced and maintained to last for years – Plus the coreless design means you can check sealant health through the valve with our Hey Dipstick! (Sold separately).

How To Use

01

Remove Ball Valve

First, remove the ball valve body, cap, locking ring & O-ring from the valve stem.

02

Choose Base

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).

03

Push Valve Stem Into Hole

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.

04

Screw Locking Nut

Screw the locking ring onto the valve stem and tighten down above the o-ring. This sandwiches between the locking ring and the rim.

05

Tighten Ball Valve Body

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. (Valve Tool servicing pack available separately). 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.

06

Push Firmly Down

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.

07

Rotate Lever

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.

FAQS

¿Qué válvula necesito para mi bicicleta?
CHOOSE YOUR FITMENT
- LITE: Fitment: Presta Pump | Presta Rim | 230% Airflow vs Presta Valves
- HYBRID: Fitment: Schrader Pump | Presta Rim | 254% Airflow vs Presta Valves
- LUDICROUS (Coming Soon): Fitment: Schrader Pump | Schrader 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 of 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)
¿Cuál es la diferencia entre Lite y Hybrid?

The lite version is slightly more lightweight and has a Presta fitment so will use a Presta Pump to inflate. The Hybrid version has an extra wide high airflow head which uses a Presta drilled rim but with a Schrader valve for a slightly higher airflow rate. Hybrid requires aSchraderpump which most pumps have.
¿Puedo cambiar a híbrido si ya tengo una válvula Presta instalada en mi bicicleta?

Yes, for sure. All it will mean is that you will now have a Schrader valve so you will inflate it with a Schrader Pump, which almost all pumps have.
¿Por qué cambiar a válvulas Big Bore en lugar de las válvulas sin cámara actuales?

With a coreless ball valve it has a ‘straight through’ internal design it has maximum airflow. The means that you can inflate your tyres and add in sealant much quicker vs a regular Presta valves.
It delivers a higher flow rate of up to 264% vs standard Presta, meaning you can inflate in seconds versus potentially minutes, and even quicker with a co2 inflator.
In addition, with it having no valve core and a servicing kit coming soon, it means your valves will last for much longer and won’t need to be replaced as often.
¿Puedo usar Big Bore con mi portaetiqueta seguro?

Yes, the Muc-Off Secure Tag Holder is compatible with Big Bore Tubeless Valves.
¿Cuándo se lanza la Válvula Ludicrous Big Bore?

Whilst we can’t give an exact date now, we expect it to launch in late 2024/early 2025.

How it works

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