A Chinese copy of some other design that's been around since 1970?
I'm not big on Chinese reverse engineering of established manufacturers parts, and it's going on more and more.
That said, my cheap old headers of similar design don't bottom out, though my car IS a little HIGH.
The other side of that is, I just bought a used Triumph Bonneville with a Chinese re-pop of the $1200 Italian manufactured Arrow pipes, and I'll say the quality is very reasonable. Performance is equal, after pulling the corks (mutes), whatever you want to call them, gutting the air-box and rejetting (oh, yeah,and regearing) my stock Bonneville hit 12.80@102 with my 200 pound *** on it! Magazines test those bikes at around 13.6 to 13.8. Retail cost of said copy? $430.
As I said, not a big fan of copies, and they probably come with the same dent your own clearances, but probably work as well as any other old style headers like Hooker, Hedman,etc.
And HEY, they're STAINLESS!
Now, if only they'd do a copy of the 1-3/4" runner Hookers in stainless...
(Hey, I'm a cheap bastard.)