AFAIK - no.
And I doubt any could be made to work.
When you extend a lever, you will also have to extend its distance from the bar.
Levers move in an arc. If you extend one while keeping the end at the same distance from the bar you’ll reduce travel. Any tall extension is likely to bottom out before giving good braking.
And if you allow the lever extension to keep curving out, reach will soon become an issue.