TruRyde Trailer Bearings Races Seals Caps - Caps - RG04-040 Review

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Review of TruRyde Grease Caps RG04-040

Today we're going to be taking a look at the TruRyde grease cap. The grease cap fits your easy lube trailer hubs with a 2" inner diameter. It also includes the rubber lube plug for easy lube axles. The grease cap is going to feature that rubber lube plug that can be easily removed to give easy access to the fitting. All you have to do is remove the plug and then it's going to expose that zerk fitting or the lube fitting. That way you can get the grease in your system as necessary.

To get them installed, they're a drive in installation. The units can be installed using a small block of wood or a soft mallet. We also offer a dust cap driver tool here at It's sold separately with part #290-001. It makes the installation process much easier. Taking a few measurements of the unit.

This end is going to be the portion that drives in to the hub. If we take a measurement of that using a precision measuring device, this is our digital caliper. That's going to give us a measurement of 1.99 inches. The portion that fits into the hub so this small lip right here, that's going to give us a depth measurement of 5/16ths of an inch and the portion that sticks out from the hub is going to measure 7/8ths of an inch long. Again, this does come in a 2 pack.

That's going to do it for today's look at the TruRyde grease cap.

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