I just put a set of Traxxas Shocks GTR XX-Long #7462X on the rear of my sons bomber and tuned it with Associated Factory Team Rear Spring Kit 13mm #91077. They'er about 100mm in length.
I really like these shocks. It's mostly put together and you just add oil. And I don't see it leaking one bit. I like it so much, I'm considering replacing my 103mm GMade piggys on my B1B with these.
You'll need to replace the shock balls with the Traxxas rod ends #5347 so it can fit in the shock mounts. The ones it comes with is a little wide.
I also put the 93mm Gmades Piggys upfront on his bomber and I'm really liking this ride height, it handles much better.
I found the 93mm Gmades on Amazon for $20/set. I bought sets for my other rigs.
https://www.amazon.com/gp/product/B009VXUZNO/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1
Actually, looks like it went up a few bucks, but still a better deal than most places I've seen.