Silca Hiro V3 Carbon Steel Side Lever Locking Disc Chuck

Silca Hiro V3 Carbon Steel Side Lever Locking Disc Chuck Silca

Silca Hiro V3 Carbon Steel Side Lever Locking Disc Chuck

Silca Hiro V3 Carbon Steel Side Lever Locking Disc Chuck

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What sets the SILCA Hiro locking chuck apart from a press-on chuck?

The SILCA Hiro is a carbon steel side-lever locking Presta chuck that attaches to your pump hose and locks onto any Presta valve from any angle with one hand. The side-lever mechanism clamps the chuck to the valve stem mechanically rather than relying on friction, so the connection holds under high pressure without hand effort and releases cleanly without a pressure drop. A rotating head lets you approach the valve from any angle, and the chuck can seal on as little as 10mm of exposed valve, which is what makes it work on disc wheels and stubborn short stems.

Construction is full metal carbon steel with a high-tech SILCA 254 elastomer gasket and adjustable gasket pre-load, so you can dial in a custom fit on any valve and compensate for wear over time. It holds pressure up to 300 psi for road and track use, and its male Schrader thread fits into any Schrader chuck, or onto a bare hose with the SILCA Thread-On Schrader Adapter. For road cyclists, triathletes, and track riders who inflate to high pressures regularly, the Hiro is a buy-once chuck, fully rebuildable and guaranteed for 25 years under SILCAShield.

$70.00
$70.00
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2 in stock

  • Orders over $100 ship free!
  • Estimated delivery: Jul 10 - Jul 14

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Specifications

  • Material: Full metal carbon steel, knurled grip
  • Gasket: SILCA 254 high-tech elastomer, adjustable pre-load
  • Lock Mechanism: Spring-loaded side lever with rotating head
  • Valve: Presta, disc-wheel compatible (needs valve access from both sides)
  • Valve Stem Seal: Seals on as little as 10mm of exposed valve
  • Pressure: Holds up to 300 psi
  • Mount: Male Schrader thread, fits any Schrader chuck or the SILCA Thread-On Schrader Adapter on a bare hose
  • Serviceability: 100% rebuildable
  • Warranty: SILCAShield, full metal construction guaranteed 25 years
  • MPN: AM-PU-CHU-ASY-006

FAQ

Does the SILCA Hiro chuck fit my pump?

The SILCA Hiro chuck has a male Schrader thread that fits into any Schrader chuck, so it replaces the stock chuck on SILCA floor pumps and fits any pump with a Schrader head. On a bare hose, pair it with the SILCA Thread-On Schrader Adapter.

How short a valve stem can the SILCA Hiro seal on?

The SILCA Hiro can seal on as little as 10mm of exposed valve, which is why it works on disc wheels and short or recessed Presta stems. Disc-wheel use requires valve access from both sides of the wheel.

Why upgrade to the SILCA Hiro from a standard chuck?

Standard chucks seal by friction and can slip or leak at road and track pressures. The SILCA Hiro locks mechanically with a side lever, holds up to 300 psi, uses an adjustable-preload 254 gasket, and is fully rebuildable, so it does not need replacing as it wears.

Best For

Road cyclists, triathletes, and track riders who inflate to high pressures regularly and want a one-handed, leak-free locking chuck that seals on short and disc-wheel valves and rebuilds rather than wears out.

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