It's a fork with only one leg QR , had a special hub includes that bolted from one side only...
It may be a collectors item because so many broke , Lyn Kastan (founder of Redline) had a gimic that sold a bunch but probably caused more injuries than first place finishes . I bet someone would give you some good $$ for it , but NEVER ride them .
Single swingarms go on the back of motorcycles , not the front of bmx bikes .
Rarity alone does not make a collectible. If there's value in something representative of the foibles of Linn Kastan, then it may have some value. He should put in on ebay, and hope that PT Barnum's words ring true.
I don't disagree. My neighbor is a few years younger than me, and we've both discussed the ridiculous prices for old parts, as we both want to build a BMX like we had when we were kids. He's choking on a grand for an original Loop Tail for his son. The cranks make sense for someone building a "Correct" bike. I just don't think anyone is going to have fond recollections of the fork that broke on them, and rush out to pay a big wad of cash for another. It's only an opinion, I could be wrong.