Not that I'm aware of. When I started working on TTBs there were Yukon and Nitro. Nitro sold and stopped making them, and Yukon has cut back on available ratios, they're regularly backordered for months until they make a run, and the price can get fairly high ($3-400 vs. used to be $1-200).
Last time I was on here talking to someone about TTB gears, they popped right up on Amazon, and now they don't.
That's not to say it's not worth shooting whoever a call or an e-mail, in case they have one on the shelf, but my experience has been other "vendors" drop-ship Yukon and don't keep their listings up-to-date.