SILCA 'Hiro' Side Locking Lever Chuck

Works very well on TPU tube valve stem, adding significant value, but great on standard valves for tubeless setups and butyl tubes, too. No stressing stems with traditional clamp on heads, no unscrewing valve core when using screw on heads. Adjust preload, push on, turn lever, get immediate pressure reading, and pump. Easy to use, versatile, and better for valve stem health.

I was dealing with a lezyne thread on pump head, either using tubeless or latex tubes im constantly adding 4-10psi. Not only the threading, i have two tubless valves on my wifes gravel bike that it just would not work on. This silca chuck head solved ALL my issues, it has never failed to seal the first time. I ride 3-4 times a week, with airing up 4 tires i save 5-8 minutes a day on top of being completely frustration free. One of the best cycling related products I've purchased.

Excellent tool for the basic use of filling Presta Valve tubes/ tubeless tires. For my MTB, I use it with a Milwaukee tire inflator and it is a perfect pair. Excellent Build quality.

always used the simpler press on (brass) Silca for butyl rubber tubes up to 140 psig, but now using polyurethane tubes which seem slicker. This connector with clamp holds onto the stem 100%1

I have another copy of the Hiro side-lock chuck and it is very good, easy to use and doesn't leak. However, due to someone applying the wrong bar code sticker on the box, I could never get Amazon to deliver the Hiro chuck as ordered--the standard Presta chuck was delivered instead. I returned two of them, and finally ordered Hiro chuck directly from Silca.

After switching to latex tubes I noticed my chuck from my silca pump would not stay on the new style valve stems. It finally annoyed me enough that I bought this new chuck for the pump. Even with the clamp, it still won't stay on the valve stems. The pump, chuck, and tubes are all Silca so they should work together well but they don't. Silca products are expensive and to my mind, not worth the bother.

Likes: Holds the presta valve well , zero air leaks when inflating tire , seems tire is inflated to the true pressure gauge reading , well made. Dislikes: Freaking $$$ expensive . Could thrown in extra rubber gasket thing for the cost.

Bought this chuck after reading about the most expensive Chuck on the Planet and found that it is (almost) worth it's high cost. There is nothing else like it, and it really does work. Do you need it? Probably not, but if you can spare the change, it really is a game-changer when it comes to convenience and ease of use. No more fumbling around to keep a lesser chuck on the valve, this one works the first time, every time. It does take some adjustment to get it to bite on the valve stem, and the polymer seal will last a lot longer on unthreaded stems, but is easily replaceable when it wears out.

It does a good job

Sehr guter Artikel, kam allerdings mit eindeutigen Gebrauchsspuren bei mir an.

Prachtig stukje techniek! Sluit het ventiel goed af en de klemkracht van het rubber is instelbaar.

Tut genau das für was es entwickelt worden ist. Und weil manche schreiben, dass der Kopf nicht dicht sein soll, man kann vorne durch drehen die Abdichtung vor dem schließen des Hebels anpassen. Benutze diese auf einer kleinen elektrischen Pumpe und so werden alle paar Tage die Reifen vor der Ausfahrt auf Solldruck gebracht…

I've read all the positive reviews on this with the only negative being the price. Price didn't bother me as long as it was a good product. I've watched the online vids, I'm deffo using it correctly but this is the leakiest thing ever. It's worst than our defence and I'm a Liverpool fan. It's going back.