Mike Piazza hit 40, 38, 36, 33 HR's from his age 30 season through his age 33 season.
In those season he had 124, 113, 94 and 98 RBi's. He hit .280 or better in all 4 of those seasons.
Gary Carter hit 20+ HR's from his age 30 season thru his age 33 season. 3 of the 4 years he had 100+ RBI's.