Rm-2 cracked - Photocredit @aal im Album # classic Off/Road DROPS (American Aerodynamic Aluminium & Steel - A research!) 📷 👓

The later RM-2 bars officially labeled Ariel by Wtb, with new logo stamp types
There have been 4 versions of this bar.

1st Prototype only with specialized logo, can be seen on Cunningham CBC. Its basically a radically flared road bar perhaps already or not in thicker gauge.. There was even a pre proto type, readically flare-made out of the "deep hooked" Cinelli Champione del Mundo

2nd The Original RM-2`s with its Logo left / WTB stamp on the right
(Available since 1985)

3rd Only one wtb Logo on left side of the stem clamp area

4th WTB outsourced produciton to Taiwan (bars started to be anodized for protection on the bar tape area. Sadly the shim/sleeve applied was of thinner material, as the bar from then on came only in 25,4 clamp diameter. Depending of what type stem you had a cutout at worst could create fatique cracks on the shim (not the bar itself, which could always be rescued