Silca Aluminum Presta Chuck - Press-On

Specifications

• Material: Machined solid aluminum, mono-crystalline diamond tooled finish
• Gasket: 242 synthetic elastomer, 5x the durability of traditional rubber, replaceable
• Sealing Mechanism: Pressure-amplifying dome geometry that uses air pressure to clamp the valve stem
• Connection: Press-on at the valve, threads into any Schrader attachment on the pump side
• Valve: Presta only
• Dimensions: 25mm diameter x 101mm
• Weight: 23g
• Warranty: SILCA Lifetime Warranty against manufacturing defects for the lifetime of the user
• MPN: AM-PU-CHU-ASY-009

FAQ

How does the SILCA Aluminum Presta Chuck seal without a lever?

The SILCA Aluminum Presta Chuck uses a pressure-amplifying dome geometry that lets air pressure clamp the chuck around the Presta valve stem. The harder you pump, the tighter the 242 gasket seals, so it holds without a locking lever or threading onto the valve.

What does the SILCA Aluminum Presta Chuck thread onto?

The SILCA Aluminum Presta Chuck threads into any Schrader attachment, so it fits a SILCA pump hose or head with the standard Schrader interface. It presses on at the Presta valve end and is Presta only.

Can the gasket on the SILCA Aluminum Presta Chuck be replaced?

Yes, the 242 synthetic gasket inside the SILCA Aluminum Presta Chuck is replaceable, so you swap the seal rather than the whole chuck when it eventually wears, typically after several years of regular use.

Best For

Riders on a dedicated Presta setup who want a refined, rebuildable press-on chuck with no lever or threading to wear out, and anyone replacing a leaking or worn SILCA press-on Presta chuck.