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Introducing our latest innovation in tubeless valve technology
Introducing our latest innovation in tubeless valve technology
Muc Off

Muc-Off Tubeless Valves Big Bore Lite Medium - Iridescent

£40.00
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Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
Earn Rewards
When you purchase this item, you will earn of rewards points to spend on your next purchase from us. You can spend your Rewards balance in-store & online.

Returns & Replacements

We want you to be completely satisfied with your purchase. If something isn’t right, here’s how we can help:


🕒 Returns Window

  • Parts, Accessories & Clothing: Return within 30 days (in-store or online)
  • Bikes & Frames: Return within 30 days (online orders only)

📦 Return Conditions

To be eligible for a return:

  • Items must be unused, unfitted, and in resale condition
  • Returned in original, undamaged packaging
  • Properly packed to prevent damage in transit
    (Contact us if you need packaging advice)

⚠️ Important:
Please do not attach labels or tape directly to retail packaging — wrap the item securely first.


🚚 Returning Your Item

Online Orders

  • Customers are responsible for return postage costs
  • We recommend using a tracked/recorded delivery service
  • If the item is faulty, damaged, or incorrect, we will:
    • Refund reasonable return postage costs
      (Excludes premium/special delivery or international shipping)

In-Store Purchases

  • Must be returned to the original store of purchase
  • Collection will also be from that store

⚠️ Important Information

  • Return requests must be submitted in writing or via email
  • We are not responsible for loss, time, or costs incurred during returns (including warranty returns)

🔧 Non-Returnable Items

We do not accept returns on:

  • Custom bike builds
  • Used or ridden bikes
  • Custom or made-to-order items

📌 Special Orders

Items ordered specifically for a customer (not held in stock):

  • May incur a restocking fee if cancelled
  • Or loss of deposit

📝 How to Start a Return

Please complete our Returns Form to begin the process.

Muc-Off Tubeless Valves Big Bore Lite Medium - Iridescent

Brand:Muc Off

Code:21141

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.

Featuring a cutting-edge, integrated ball valve system, the valve ensures lightning-fast airflow, turbocharging the sealant filling process. Say goodbye to the hassle of traditional tubeless valves that clog up and require the valve core to be removed to fill sealant and achieve sufficient air flow during tubeless set up.

Our Big Bore Lite offers up to 230% higher air flow than traditional Presta valves thanks to the straight through bore design.

With our ball valve construction and integrated lever, you can quickly open and close the valve for effortless airflow control, and even fine tune your pressure whilst you're out riding.

Crafted from 7075 aircraft grade CNC machined aluminium construction with a stainless steel ball valve, this fully serviceable valve is built to withstand the toughest rides, whatever the conditions.

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