A mate emailed me this arvo and reckoned that he saw the bike on Mark Holloways chat room a couple of years ago and apparently it's got a titanium frame.
''I was at the race at Glen Helen where he showed up with that trick TM and saw it both racing and up close. I think his last name is actually Byrd if I recall right. The bike had aftermarket frame (can't remember if it was a C&J?) and swingarm, custom triple clamps, and everything lightned, milled, drilled, or made of unobtanium. The bike was patterned after those factory Suzuki works bikes from the early 1970's that DID weigh 170lbs and it would not surprise me if it actually was that light or close to it. Dan himself on the otherhand looked to be an easy 200+ pounder
I had never heard of him or seen him race before, but we have a couple former factory riders racing with our VMX club and he was right with them all day on that TM. It carved and turned like no TM I ever remembered and had plenty of power and straightline stability and he was just flicking it around on what was a very tight track that day with 1 large uphill that he would scoot right up chasing the top 2 guys. He may have even won a moto or class 1st overall for the day too, but my memory isn't that great as I wasn't really focused on him or the bike that much unless it was between my motos''
AND
Dan Berg was a 5X CMC champ....I parked next to him at the Calvmx race after Glen Helen which was at Perris Raceway last month. Yes it was a Titanium framed works replica TM400 and the owner(didnt catch his name) did tell me it was 170 lbs....Dan was leading his race with Scott Burnworth and Jim Gibson in hot pursuit before the pipe broke...