No, I don't have one to measure are put a magnet against. I'm trying to do a front end swap with xv920 forks on a 86 xv700 but don't like the looks of the top triple tree clamp from thee 920. So I was searching for a complete aluminum tree with 36mm forks. I found a website call donor bike.com that said it would fit but wasn't sure the info was accurate. The bottom bearing is the same, but the top of the fz600 steering tube is 3mm less than the xv920. Not a problem I believe just need to buy another bearing. I went ahead and bought one off eBay for $15. 01marc thanks for replying.