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Shop Muc-Off Big Bore Lite Tubeless Valves. Coreless straight-through design with up to 230% more airflow than Presta valves. Faster tyre seating, no clogging, multiple lengths and colours available.
Shop Muc-Off Big Bore Lite Tubeless Valves. Coreless straight-through design with up to 230% more airflow than Presta valves. Faster tyre seating, no clogging, multiple lengths and colours available.
Muc-Off

Muc-Off Tubeless Bicycle Tyre Valves Big Bore Lite - Black

£40.00
Size Guide
Muc-Off Tubeless Bicycle Tyre Valves Big Bore Lite - Orange Muc-Off Tubeless Bicycle Tyre Valves Big Bore Lite - Pink Muc-Off Tubeless Bicycle Tyre Valves Big Bore Lite - Blue Muc-Off Tubeless Bicycle Tyre Valves Big Bore Lite - Iridescent
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We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined

Muc-Off Tubeless Bicycle Tyre Valves Big Bore Lite - Black

Brand:Muc-Off

Code:211BLK

Big Bore Lite Tubeless Valves – Maximum Airflow, Coreless Design, Faster Inflation

Upgrade your tubeless setup with the Muc-Off Big Bore Lite Tubeless Bicycle Tyre Valves, a patent-pending, high-airflow tubeless valve system engineered for faster inflation, zero clogging, and simplified sealant installation. Designed with a revolutionary straight-through internal bore and integrated stainless-steel ball valve, the Big Bore Lite sets a new benchmark for high-performance tubeless tyre systems.

What's Included:

Big Bore Valve

Available in up to 6 colours and 6 different sizes.

Unlike traditional Presta valves, the Big Bore Lite features a coreless design that eliminates internal restrictions. This results in up to 230% greater airflow compared to standard Presta valves, allowing you to seat tyres faster, add sealant without removing a valve core, and inflate in seconds rather than minutes.

Coreless Ball Valve Technology – No Clogs, No Hassle

The integrated stainless-steel ball valve system with lever control allows instant opening and closing of airflow. This means:

  • No valve core removal required for sealant filling
  • No sealant clogging issues
  • Quick and efficient tubeless tyre setup
  • On-the-fly micro pressure adjustments while riding

Whether you’re setting up MTB, gravel, road, or enduro wheels, the Big Bore Lite dramatically improves airflow for easier tyre seating and maintenance.

Premium CNC-Machined 7075 Aluminium Construction

Precision CNC machined from 7075 aircraft-grade aluminium with a stainless-steel ball valve, these fully serviceable tubeless valves are built to handle aggressive trail riding, enduro racing, and harsh weather conditions. A 4mm hex key slot ensures straightforward installation and removal.

Each kit includes:

  • Big Bore Lite Valve
  • Multiple rubber bases & O-rings for optimal rim compatibility
  • Bespoke tightening spanner
  • Integrated 4mm hex slot
  • Sealant dipstick sold separately.

Lite Version

  • Presta rim fitment
  • Presta pump compatible
  • 230% airflow increase vs standard Presta valves

If you’re currently running Presta valves, the Lite version installs directly into your Presta-drilled rim and works with standard Presta pumps.

Choose Your Valve Length

Available in six valve stem lengths to suit shallow and deep carbon rims:

  • 30mm (Small)
  • 35mm (Medium)
  • 45mm (Large)
  • 60mm (XL)
  • 70mm (2XL)
  • 80mm (3XL)

Select a valve length that provides sufficient threaded stem above the rim to secure the O-ring, lock ring, and valve cap. If using with a tubeless tag holder system, allow an additional 5mm when selecting valve length.

Choose Your Colour

Available in six anodised colours:

Black, Iridescent, Red, Blue, Orange, and Pink. (60mm, 70mm, and 80mm options available in selected colours.)

Why Upgrade to Big Bore Lite Tubeless Valves?

  • Straight-through bore design for unrestricted airflow
  • Inflate tyres up to 230% faster than standard Presta valves
  • No core = no clogging
  • Faster tubeless tyre seating and sealant filling
  • Lever-operated airflow control
  • CO₂ compatible
  • Fully serviceable design for extended lifespan
  • Compatible with tubeless-ready and UST rims

The Muc-Off Big Bore Lite Tubeless Valves are ideal for riders who want faster inflation, improved airflow, and a more efficient tubeless setup without the frustration of clogged Presta cores.

Technical Information

HOW TO:

Remove Ball Valve

First, remove the ball valve body, cap, lockring ring and O-ring from the valve stem.

Choose Base

Choose the correct rubber base for your rim type. Rims with a curved rim section will use the square 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 the plug hole).

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 O-ring onto the valve stem and slide it all the way down until it meets the rim.

Screw Lockring Nut

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

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 spacer, 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 Muc-Off's Loc-On for an extra secure seal.

Push Firmly Down

Now push firmly down on the valve base inside the rim as you tighten the lockring ring. Keep pushing until the lockring ring is hand-tight and the rubber O-ring squashes out slightly. This way you will know that you have created a good airtight seal. TIP - Don't over-tighten as this can cause leakage.

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

Sizing Information
Professional Opinion
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