Piff I gotcha'. Bob Jackson had used OS tubing for a lot of their builds up until the closer in 2020, and apparently Woodrup is carrying on that tradition with standard OS tubing and 1 1/8" steerers for the re-released models. In any tubing choice these are bound to be stiffer than classic standard sized 531 frames, and as long as they're made using higher strength steel like 725 or 853, almost certainly lighter despite the increased tube dimensions.

-Gregory