Kevin Manning rode the 3-10 favourite to victory by 2 ¾ lengths from 33-1 outside Leitir Mor with 9-2 second favourite Ashdan back in third.
The Jim Bolger trained horse, who has also won the Coventry Stakes and National Stakes this year, has now been installed as the 7/2 favourite for next season's 2,000 Guineas and is also as low as 10-1 for the 2013 Derby.
It was Bolger's fifth win in the Dubai Dewhurst Stakes in just seven seasons.
In the day's other Group 1 race, Reckless Abandon also kept his unbeaten record to win the Vision.ae Middle Park Stakes.
Ridden by Gerald Moose and trained by Clive Cox, the 9-4 joint favourite won by just neck from fellow market front runner Moohaajim with surprised 33-1 shot Gale Force Ten not far away in third.