Thor's Lightning Dynamo Lock-On Air Chuck – Heavy-Duty Closed-Flow Tire Chuck for Schrader, Short-Stem & Apex RPV Valves

Locks on. Stays on. Frees your hands.

The Thor's Lightning Dynamo clamps onto your valve stem and stays put, so you can air up or air down without holding the chuck or listening to it hiss. It fits nearly any compressor hose or shop air line, not just Thor's Lightning systems.

Want it protected? Dirt and grit are what kill air chucks. Get the Dynamo Chuck + Cover Bundle: the tethered cover lives on your hose and caps the chuck between uses, so it can't get lost.

• Hands-free lock-on design: a three-tooth locking jaw grips the valve and holds a leak-resistant seal, so you can check pressure, walk around the vehicle, or run four tires at once.
• Fits valves that generic chucks struggle with: works on standard Schrader stems, the short stems found on Toyotas and aftermarket wheels like AEV, and Apex Rapid Precision Valves (RPV).
• Closed flow: air only flows once the chuck is locked onto the valve, so there's no wasted air while you connect it.
• Easy grip, even with gloves: the textured collar locks on and releases in one motion, whether you're in the cold, the mud, or at the trailhead.
• Heavy-duty and backed for 3 years: rated to 300 PSI with a 1/4" female NPT connection, covered by a 3-year warranty.

Made for every rig

Off-road vehicles, trucks, SUVs, RVs, trailers, farm equipment, and garage air hoses. It's also the chuck used on Thor's Lightning multi-tire air systems for fast inflation and deflation. Pair it with Dynamo Lock-On Air Chuck Covers to keep dirt and grit out between uses.

Specs

• Connection: 1/4" female NPT
• Flow type: closed flow
• Maximum pressure: 300 PSI
• Compatible valves: Schrader (standard and short stem), Apex RPV
• Options: Candy Red, Candy Blue or Silver; single chuck or 4-pack
• Warranty: 3 years

Questions? Email sales@thorslightning.com.