Pump chucks wear out before the rest of your floor pump does—the rubber seal compresses over time, the threading gets crossthreaded once too often, or the internal mechanism just stops gripping valve cores the way it used to. Silca's Thread On Schrader Chuck gives you a direct replacement for their floor pump lineup without buying a whole new hose assembly or pump head. It's the same chuck that ships on Silca's Pista, Superpista, and Superpista Ultimate pumps, machined from brass with the kind of tolerances that made their original equipment last years in the first place.

The thread-on design creates a more secure valve connection than slip-on chucks, which matters when you're pushing high pressures and don't want the chuck blowing off the valve mid-stroke. You screw it directly onto the Schrader valve stem, creating a seal that handles the full pressure range of Silca's floor pumps without leaking air around the connection point. This approach also reduces the fumbling that happens with lever-actuated heads—no clamping mechanism to wear out, no plastic lever to snap off.

Compatibility runs across Silca's modern floor pump range. If you've got a Pista, Superpista, or Superpista Ultimate with a worn chuck, this drops right onto the existing hose. The brass construction resists the corrosion that eventually kills aluminum and plated steel chucks, particularly if you're pumping tires in a shop environment or storing the pump in a garage where humidity fluctuates. For home mechanics who've put years into a Silca pump and want to keep it running rather than replace it, this is the maintenance part that extends the pump's service life indefinitely.... Read More