Bradley finished with a 6-under-par 66 in the second round and is at 13-under 131 after 36 holes. First-round leader Ryan Moore, after a 63 Thursday, turned in an even-par 72 and is at 9-under for the tournament.
Kiradech Aphibarnrat and Chris Stroud each shot 3-under 69 in the second round and are tied for third at 8-under for the tournament. Marc Leishman, whose 65 marked the round of the day Friday, and Sergio Garcia, who shot 71 in the second round, are tied for fifth at 7-under 137.
Bradley started his second round at the Kuala Lumpur Golf and Country Club and a birdie at No. 10. He suffered his first bogey of the tournament at the 13th hole but got that stroke back with a birdie at No. 16.
He pulled away from the field with birdies at Nos. 2 and 3 and then three in a row over the fifth through seventh holes. He had birdies on all five of those same holes Thursday.
Moore slipped back with a mixture of the birdies and three bogeys Friday.
Leishman's 65 included going 6-under over Nos. 3-7 that helped him to a front-side 30. He had an eagle -- at the par-5 fifth -- seven birdies and two bogeys on the day.