Power Tank Shock Chuck Xtra Long No-Air-Loss Nitrogen Shock Chuck

The Power Tank Shock Chuck Xtra Long is a no-air-loss (NAL) stainless steel chuck rated to 1,000 psi, designed to connect a nitrogen shock inflator to a Schrader valve without a wrench and without losing gas pressure when disconnecting. The extended body reaches Schrader valves in cramped or recessed locations where standard-length chucks cannot seat. It is available in 1/8 NPT female and 1/8 NPT male thread variants.

Finger-Tight Connection, Zero Nitrogen Loss

Traditional aviation-style zero-loss chucks require a wrench to tighten and a T-handle to release, making them awkward to use on shocks that are still mounted to a vehicle. The Shock Chuck Xtra Long replaces that process with two knurled thumb nuts: one to seat the chuck on the valve stem, one to depress the valve core pin, so the entire connection is made by hand. The bottom nut retains wrench flats for situations where extra torque is needed, but most installations require none. Fewer tools in a cramped wheel well means faster, less frustrating shock tuning on the trail or in the shop.

Closes Under Pressure for a True No-Air-Loss Disconnect

The two-nut design is not just about convenience. It is what makes the no-air-loss function work. Because attaching and depressing the valve core are separate actions, the chuck can be closed while the shock is still under pressure before the connection is broken. Nitrogen stays in the shock when the chuck is removed, so each tuning session starts from a known baseline rather than requiring a top-off after every adjustment. The copper seal found on older designs has been replaced with a softer material that achieves an airtight seal at lower torque, reducing wear on the valve stem over repeated use.

Rebuildable Stainless Steel Construction

The Shock Chuck Xtra Long is machined from stainless steel and is fully rebuildable, meaning worn seals and components can be replaced rather than discarding the entire chuck. The extended nose (2.2 inches fully extended, 0.755 inches in diameter) gives it reach in applications where a shorter chuck cannot make contact with the valve stem. This extended geometry is the configuration used on Power Tank's Shock Boss shock inflators.

Features

• No-air-loss design: two-action knurled thumb nuts allow the chuck to close under pressure before disconnecting
• Wrench-free attachment: knurled thumb nuts seat and seal by hand; wrench flats retained on bottom nut for optional extra torque
• 1,000 psi working pressure: rated for nitrogen shock inflation and ORI Strut applications
• Extended reach: 2.2-inch fully extended length and 0.755-inch nose diameter for cramped or recessed Schrader valve locations
• Stainless steel construction: rebuildable for long-term service
• Patent pending

Specifications

Who This Is For and Isn't

The Shock Chuck Xtra Long suits shock tuners, off-road builders, and race teams who adjust nitrogen-charged shocks or ORI Struts on a vehicle, particularly where the Schrader valve is difficult to reach with a standard-length chuck or a wrench-operated aviation chuck. The extended body and hand-tightening design make it practical for in-vehicle tuning without removing the shock.

The Shock Chuck Xtra Long does not work with IFP (internal floating piston) shocks that fill via a needle rather than a Schrader valve. Those shocks require a separate shock fill needle assembly. Do not twist the chuck body while attaching or removing it from the valve stem, as this can damage the seal.

Common Questions

What thread size does the Shock Chuck Xtra Long use, and can it be adapted to 1/4 NPT?

The Shock Chuck Xtra Long is available in 1/8 NPT female or 1/8 NPT male thread. The female-thread version can be converted to 1/4 NPT male or 1/4 FPT female connections using separately sold thread adapters; the male-thread version does not require an adapter for most nitrogen inflator hose fittings that use 1/8 NPT male.

Does attaching this chuck require a wrench?

The Shock Chuck Xtra Long is designed to attach and seal by hand using its two knurled thumb nuts. No wrench is needed for typical use. Wrench flats are retained on the bottom nut for situations where extra torque is required, but most connections seat fully by finger pressure alone.

What is the working pressure rating?

The Shock Chuck Xtra Long is rated to 1,000 psi working pressure, making it suitable for nitrogen shock inflation and ORI Strut applications that operate well within that range.

Why does this chuck have two thumb nuts instead of one?

The two-nut design separates the actions of seating the chuck on the valve stem and depressing the valve core pin. This lets the user close the chuck while the shock is still under pressure before breaking the connection, so no nitrogen escapes when the Shock Chuck Xtra Long is removed. The no-air-loss function depends on this two-step sequence.

Can the Shock Chuck Xtra Long be rebuilt if a seal wears out?

Yes. The Shock Chuck Xtra Long is fully rebuildable, so worn seals and internal components can be replaced rather than replacing the entire chuck. Power Tank designs its shock tools for long-term serviceability.

Will this chuck work with IFP shocks that fill with a needle?

No. The Shock Chuck Xtra Long connects to a Schrader valve and is not compatible with IFP (internal floating piston) shocks that require a fill needle. A separate shock fill needle assembly is needed for those applications.