A review of Muc-Off's Big Bore Lite Tubeless Valves, highlighting their advantages over traditional Presta valves in a tubeless setup.
At road.cc every product is thoroughly tested for as long as it takes to get a proper insight into how well it works. Our reviewers are experienced cyclists that we trust to be objective. While we strive to ensure that opinions expressed are backed up by facts, reviews are by their nature an informed opinion, not a definitive verdict. We don't intentionally try to break anything (except locks) but we do try to look for weak points in any design.
The overall score is not just an average of the other scores: it reflects both a product's function and value – with value determined by how a product compares with items of similar spec, quality, and price.Muc-Off's Big Bore Lite Tubeless Valves are nicely engineered and more or less immune to getting gummed up by sealant. The airflow through them is much higher than cored Presta valves, which can also make sealing tubeless tyres less of a chore, depending on how you do it. They're expensive, but they're really good. First off: how are they different? Well, the Presta valve we're probably all familiar with has a removable core, which screws into the valve stem. You can lock this with a small nut on a threaded rod, and when open the valve can be depressed to allow air into the tyre. It's a great system that for the most part works flawlessly. Or it did, until tubeless. Tubeless tyres introduce two new things for the valve to cope with. Firstly, you need to actually seal the tyre against the rim. This requires a blast of air from a compressor or a tyre booster, or some very quick work on the pump. The problem is that a Presta valve just isn't designed to handle that level of airflow. Normally, you have to remove the core to seal the tyre, then deflate it and put the valve back in before blowing it up again. The second issue is sealant: this is literally designed to gum things up and there's nothing it likes to gum up better than the delicate workings of a Presta valve
TUBELESS VALVES REVIEWS MUC-OFF CYCLING
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