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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