From £105.00
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Code: SIAMPUCHUASY00
Silca Hiro Side-Lever Locking Chuck
The Side-Lever Locking Chuck is classic SILCA quality and manufacturing in every detail.  100% made in the USA from fine stainless steels, 100% rebuildable, and utilizing a new, high-tech elastomer gasket design, the 254, which is already available for replacement sale and like all other SILCA gaskets, will remain available for the next 25 years and probably longer.
 
Specification
  • Full metal construction, guaranteed for 25 years and covered by SILCAShield 
  • Uses SILCA 254 High-Tech Elastomer gasket
  • Adjustable gasket pre-load allows for customizable fit on any valve as well as compensation for gasket wear
  • Spring loaded lever for better force management and positive on/off feel.
  • Male Schrader thread fits into any Schrader chuck, or use SILCA Thread-On Schrader Adapter to fit to bare hose
  • 100% Made in USA
  • Bullet-proof high-pressure, disc compatible chuck for high pressure situations.
 
Please Note:
The Hiro Chuck is a finely crafted tool for those obsessed with the details as well as the experience of cycling.  It is a tool which rewards knowledge and understanding of how it works, please expect to spend some time acquainting yourself with the function of the Hiro before you use it.  It is not a screwdriver or a hammer, it is an intricately machined, high-precision device with very unique features and user adjustability, learn how it works and you will find great pleasure in it's operation.  You will smile every time you use it and you will amaze onlookers in the track infield at your ability to achieve any pressure without holding it in place, and you will someday hand it down to your children, who will replace the gasket and use it for another 25 years.  Passion. Precision. Performance
Bought a Silca track pump and found the push-on chuck would not hold onto my short valve stems (the narrow bit is the only part it can hold not the wider valve stem) without holding it in place with one hand. I had previously successfully used the screw-on Lezyne chuck which worked perfectly, but took time to screw on and off which was a faff at the start of a race or if used at group ride. So bought this clamp-on chuck. Works great, adjusted the tension so it holds the narrow threaded part of the valve when clamped and won't pop off at 9bar (highest pressure tested on tubular tyres). Easy and fast to use reliably with one hand. Silca should sell the pump with one of these as a standard option which should be a bit less than i've spent having to buy the standard push-on chuck as well. It's an 'investment' as I expect this will last over 10 years and continue to work better than any other chuck. Time to list the push-on Silca chuck on ebay!
This is probably the ultimate presta chuck. It is easy on, easy off, and places minimal load on the valve. Once locked on it won't come off, and because it grabs the valve all round there is minimal wear on the chuck seal. If you are hesitating about spending more on a pump chuck than many complete pumps, don't you won't regret it.