AJ flops trips; do I bet river?

[vexas]

This may come across as a silly question but I have lost a lot of confidence in my turn and river play recently. I have consistently been making the wrong decision. So I am getting back to basics.

On this hand, I was suspicious that villian kept calling on such a scary board and struggled with whether I should just check behind or fire on the river. Thoughts? Thanks in advance.


Poker Stars - No Limit Hold'em Cash Game - $0.10/$0.25 Blinds - 4 Players - (LegoPoker Hand History Converter)

SB: $35.30
BB: $24.15
UTG: $29.05
Hero (BTN): $28.15

Reads: <font color="blue">Villian is 25/5/2.5 after only 63 hands</font>

Preflop: Hero is dealt A[img]/images/graemlins/club.gif[/img] J[img]/images/graemlins/diamond.gif[/img] (4 Players)
UTG folds, <font color="red">Hero raises to $1.00</font>, SB calls $0.90, BB folds

Flop: ($2.25) K[img]/images/graemlins/diamond.gif[/img] A[img]/images/graemlins/spade.gif[/img] 4[img]/images/graemlins/heart.gif[/img] (2 Players)
SB checks, <font color="red">Hero bets $1.75</font>, SB calls $1.75

Turn: ($5.75) A[img]/images/graemlins/diamond.gif[/img] (2 Players)
SB checks, <font color="red">Hero bets $4.00</font>, SB calls $4.00

River: ($13.75) 6[img]/images/graemlins/heart.gif[/img] (2 Players)
SB checks, Hero ?