Taken from Warhammer Aliiance forums.

Here are the Renown Rank Armour/Weapon Levels.

The sets that you buy from the Armor / Weapon Merchants in the RvR warcamps have both a Level AND a Renown Rank requirement.

The earlier GREEN QUALITY sets shown on WARDB follow this pattern:
(RR / LVL):
2 / 2
4 / 4
6 / 10
8 / 14
11 / 21
12-13 / 25
15-16 / 31
21-22 / 39

BLUE QUALITY:
25 / 29
35 / 37-39
50 / 39

PURPLE QUALITY:
70 / 40

Nice info, I was just begining to wonder on the levels. Guess my shamie is on track at 8rr & lvl 12.

I have to admit i do love the way the pvp is integrated in the game, its so easy to find unexpected pvp as & when you choose, & just as easy to avoid it if your not in the mood. Also its the most stressless PVP I've ever played, even as a healer/dmg.

Aye tis good getting XP during RvR as well as the sheer fun of it.