Not to my knowledge. Would be easy enough to make one, but aligment at assembly would be trickier. Can't really see the point though, apart from a few select occasions.
Unless you want to run a tight bend bar, you can use a short reach quill stem with a wraparound clamp. Like this one:
If you're able to track down a steel one from a cruiser/townie style bike, they basically only have enough reach to let the bar clear the stem. Like this one. But this particular sample had an odd bar size.
The shortest ones with a removable faceplate add maybe 20 mm to that. Like this one.