Actually, Art, after studying your pipe further, I'm not sure it is for the MT250.
If you look at the picture of my MT250 Torque Engineering pipe, the angle of the stinger/tail pipe appears to be opposite that of your DG pipe?
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File comment: Torque Engineering pipe for MT250
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As my Torque Engineering pipe doesn't tuck out of the way that well towards the rear of the pipe, I would suspect that this DG pipe would be worse.
Just a thought... I don't have any pictures or articles on this but, I do remember that someone made an up pipe for the 73/74 CR250 and I'm pretty sure that that was DG. Could this be what your pipe is? Might be worth checking out.
Either way, it's definately not for the MR250
Hope this helps,
Grae.