50NL 6m Flopped trips and maximizing value

PokerStars No-Limit Hold'em, $0.50 BB (4 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Hero ($51.05)
SB ($53.85)
BB ($142.60)
UTG ($47.20)

Preflop: Hero is Button with 4, 6.
1 fold, Hero raises to $2, SB calls $1.75, 1 fold.

Flop: ($4.50) 4, 4, K (2 players)
SB checks, Hero bets $4, SB raises to $8, Hero calls $4.

Turn: ($20.50) 2 (2 players)
SB bets $8.5, Hero ???

---

Villian is about 40/8/2 over about 25 hands, no strong reads.

I feel that on the flop, I am way ahead and am looking to maximize value.

How do you like the flop call, and what's your move on the turn?

Push or minraise and push river.