Yamaha WR250F 2007-2014. Yamaha YZ250F 2006 ONLY. The core of the radiator is welded in vacuum brazing furnace, no epoxy. The tanks are 100% welded by TIG. Core and Tank: ALL ALUMINUM. Including : left and right side radiator.
I haven't tried them out yet, but they appear to be very well made. They were package very well too, and so all of the fins arrived in perfect condition, which I'm thankful for. I also can't comment on fitment as I am using them on something else.
The radiator bolted up to my 07 WR250f as described, but the water line fittings were mix-matched in size (some were a bit too small and required extra clamping, and other fittings a bit big and required a bit of hose stretching to fit). Also, the fan DID NOT fit on my bike with the OEM gas tank.... so could not use the fan...