It looks like those came with Dia Compe 960s.

Those are some pretty decent brakes. Even the really nice Dia Compes like the 980-981s had the exposed spring- they had pretty arms, but they stuck out really far. The 960s have good stopping power AND have short arms.

If you're having stopping problems, you're best off to get some Kool Stop pads. I put the Kool Stop Cross Pads on my Trek 620 and I really dig them. They stop great, don't mar the rims and they don't scream "I'm new!!!"

If you just want to get new/different brakes- go for it! If you're looking for roughly period correct brakes- IMO- the 980 and 981s are about the nicest looking DiaCompe models and they're great brakes. The other top shelf choice for the time would be the Shimano BR-MC70 brakes- those were the brakes from the "Deerhead" XT group.

The DiaCompe 980:





The Dia Compe 981:




Check out Stronglight's excellent Flickr page on the 981 brakes:

https://www.flickr.com/photos/strong...7606108523956/


And the Shimano BR-MC70:




Here's my 85 Trek 620 with the BR-MC70 brakes with the Kool Stop Cross Pads:





HOLY CRAPBALLZ!!! Photobucket is HORRIFYING. Just launching it totally hosed up my computer. I had to go to Google Images to find my own effing pictures. No, I'm not going to pay you to not launch your ads that make your site useless.