It was the third win this week — and the second in 24 hours — for the Tigers, who raised their record to 3-1.
Ridgefield was coming off a 79-38 victory over Wilton on Thursday night.
Steidl, who scored 37 points in the win over Wilton, led the way once again with 30 points Friday night against Harding. He also grabbed a team-high 14 rebounds.
Racy added 25 points for the Tigers, who led 41-27 at halftime.
Eight other players scored points for Ridgefield