20402100 - Tweco 94RR Replacement Trigger Contact Blades

Get Your Gun Firing Like New

There is nothing more frustrating than a MIG gun trigger that cuts out right in the middle of a bead. If you find yourself having to squeeze the trigger extra hard, wiggle it around, or if your wire feeder is stuttering when you try to start an arc, your trigger contacts are likely worn out. The Tweco 2040-2100 Trigger Blades are the exact replacement parts you need to fix the legendary 94RR trigger assembly found in many Tweco Classic guns. Don't struggle with a faulty switch; swap out the blades and get back to smooth, reliable welding.

Why Replace the Blades?

The trigger on your MIG gun is the most used moving part in your entire setup. Every time you start a weld, two pieces of metal come together to send the signal to your machine. Over thousands of cycles, these metal blades can get pitted from tiny electrical arcs or coated in shop grime and oxidation. This creates a bad connection. The 94RR assembly is brilliant because it is designed to be rebuilt. Instead of buying a whole new expensive switch or a new gun, you can simply pop in these fresh blades. It is one of the cheapest and most effective repairs you can do to restore your equipment's performance.

Installation Tips

Replacing your trigger blades is a quick bench job that takes just a few minutes. Start by unplugging your machine to stay safe. Unscrew the handle of your MIG gun to expose the trigger mechanism. You'll see the old blades sitting inside the assembly. Take note of how they are positioned, remove them, and clean out any dust or debris from the area. Pop the new 2040-2100 blades in, making sure they sit flat and line up perfectly. When you put the handle back together, test the trigger click to make sure it feels crisp. It’s that easy to save yourself hours of frustration.

Genuine Tweco Quality

When it comes to electrical contacts, materials matter. These are genuine Tweco parts, meaning they are made from the right conductive alloys to resist corrosion and wear. Cheap knock-offs might work for a week, but they often bend or corrode, leaving you with the same problem you started with. Stick with the authentic 2040-2100 blades to ensure your trigger works every single time you pull it. Keep a spare set in your toolbox so you never have to stop a job due to a simple switch failure.