Originally Posted by KingKarate757
Nothing beats the spec-r gear diff. I think the BD5 spec-r fits the photon with a few shims.
The Upro diffs suck. I have gone through 3 of them. And im sure you saw Tony shred his yesterday.
I hear good things about the Spec-R. I did see Tony's ripped up, but i think it was probably due for a rebuild. Mine is too new to know of its durability...but it was butter smooth yesterday with no problems... not even a leak or seepage.
Ill see if a local has a spare i can try to see if its even worth shelling out the coin for a second gear diff...