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Silca Locking Presta Valve Chuck "Hiro V.2"
Silca Locking Presta Valve Chuck "Hiro V.2"

Locking Presta Valve Chuck "Hiro V.2"

Mfg PartNum:AM-PU-CHU-ASY-006
  (5 customer reviews)
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Designed for professional race mechanics. Built to hand down to your children.

This is Silca's locking head for high-pressure situations. Initially developed for pro cycling mechanics who need to inflate nine disc wheels at breakneck speed for a team time trial, the Locking Presta Valve Chuck uses a rotating head and a locking side lever for quick, one-handed locking onto any Presta valve from any angle, guaranteed to seal to 300 psi.

The locking chuck is precisely constructed from stainless steel with just enough knurl to be securely handled in slippery situations. The chuck uses a high-tech Silca 254 elastomer gasket that should last 25 years for home mechanics, and – as with all Silca products – can be replaced for yet another 25 years of service.

Adjustable gasket preload for customized fit. Male Schrader threading fits into any Schrader chuck or Silca's Thread-On Schrader Adapter. 100% US-manufactured. Manufacturer-guaranteed for 25 years.


Mfg PartNum: AM-PU-CHU-ASY-006 

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Gear Product
by Rr
new England

But even better conmoany to deal with. Fully knowledgeable staff answered all my questions prior to purchase... such a good feeling to purchase from a great store.

Reviewed 2/21/2019
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Silca hero V.2 - marvel of engineering
by Bruce Mc
Portland, OR
1 of 1 customers found this review helpful.

A must for deep rims and tight valve clearances. Impress your friends with the coolest bike tool they have ever seen.

Reviewed 8/13/2018
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Well made
by Bert
jacksonville fl
3 of 4 customers found this review helpful.

Im a big believer in quality. I know some would consider this expensive. But I will say very well made and moron proof. By that I mean Im not the best with gadgets sometimes and yet I had no problem using product. This product is worth the investment because you will pass it down as it will outlast you.

Reviewed 12/18/2017
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easy to use
by Anonymous
Daily Commuter
South Dakota
4 of 5 customers found this review helpful.

I use it on my go to pump. I run my tires from 60 to 90 psi so I don't know about how well the head stays on when using at high pressures. I like that I'm not twisting my presta valve when I put it on or off. It goes on quick and holds well. It's down fall is price and size. The size is OK on a floor pump, but if you carry it it's kind of big.

Reviewed 5/18/2017
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Another big disappointment from Silca!
by Phil W
Cycling Enthusiast
Southern Indiana
2 of 7 customers found this review helpful.

I had purchased a Silca pump a couple of years ago but had seldom used it as there was one problem after another with it. Threaded valve stems wore out the rubber gasket very quickly so I bought replacements. It didn't want to seal very well on any valve stems whether threaded or smooth. Also, the hose fitting came apart but I contacted Silca and they replaced the hose as it was under warranty. I thought maybe the locking valve chuck would solve all of the problems and allow me to finally get some use of this expensive pump instead of continuing to use my good old reliable $50 pump from brand S. Well, it just turned into throwing good money after bad as the chuck, when locked, does not stay on the valve when the pressure nears a usable pressure, 95 to 100 psi. Silca seems to make very attractive and very expensive products, but from my experience, they just don't work very well. Very disappointing!

Reviewed 3/9/2017
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