McGuinness’ pit stop was six seconds quicker than third placed Martin but Johnson never got that far having retired at the Nook out of fuel so the leaderboard now read Dunlop, McGuinness, Martin, Donald, Conor Cummins and William Dunlop. However, the latter incurred a 30s penalty for speeding in the pitlane dropping him down the order.
Coming into the second pit stop at the end of lap four, Dunlop was the only rider above 130 mph and it stretched his advantage over McGuinness to 30.8 seconds although that soon increased with his Honda TT Legends team-mate being hit with a one-minute pit lane penalty dropping him behind Martin and back to fourth.
Dunlop had now caught McGuinness and Donald on the road with the trio circulating in close formation and all he had to do was continue that for the final laps to claim his fourth TT win. Nineteen-time winner McGuinness was piling on the coals as he desperately tried to get back on the podium but lap five spelt disappointment for sixth placed Dan Stewart who retired at Sulby Village with a holed radiator.
As McGuinness closed in on Martin, Dunlop was able to ease back in the final lap and bring the bike home for a famous win, his eventual winning margin over Donald in excess of 40 seconds. The Australian, like Dunlop, posted a new personal best lap of the Mountain Course but McGuinness was still able to grab some headlines as he set a new outright lap record on the final circuit, 131.671 mph, to claim third from Martin and make it a Honda 1-2-3.
Cummins took a good fifth on the Milwaukee Yamaha, the first time he’d completed a six-lap race since 2009 with the third of the Honda TT Legends riders Michael Rutter in sixth. James Hillier took seventh from Anstey, William Dunlop and the sensational Josh Brookes, the Australian finishing in tenth and becoming the fastest ever newcomer in the process, his final lap being a stunning 127.726 mph.
In the battle of the privateers, it was Steve Mercer who came out on top in 13th overall, just ahead of Dan Kneen, Ben Wylie and Jamie Hamilton.