[Prophet21]

Are there dice pool maximums?  And if so, where are they located in the Anniv rulebook?

[ZeConster]

By default, there's no dice pool cap, although page 61 has an optional rule to cap it at the highest of 20 and 2 x (natural Attribute + natural Skill).

[StarManta]

SR4A, page 61: "Optionally, gamemasters may choose to cap dice pools (including modifiers) at 20 dice, or at twice the sum of the character’s natural Attribute + Skill ratings, whichever is higher."

There is no dice pool cap mentioned in SR5 (the mechanic is covered by Limits).

[Prophet21]

Thanks much guys, I knew it was somewhere just couldnt find it.