A closer look at the H-box or exhaust power chamber - Honda CX500, GL500, CX650, GL650

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This particular H-box is off a Honda CX650ED:

Rotated 180 degrees:

There's a couple of items of note stamped into it - first, SANKEI 2130:

...and elsewhere, HMMGO-A:

Some more brackets:

A couple of other bolt holes:

We'll have an article showing the internals in the future - stay tuned.

Tip to tip (front to back) the CX650ED H-box measures a hair under 320mm.

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