Brookes and McWilliams grab provisional polespublished at 10:35 BST
High-profile newcomer Storm Stacey led the Superstock speeds for much of their slightly curtailed session but ultimately ended up third on the leaderboard with 107.870mph in first qualifying on Wednesday,
Australian Josh Brookes came out on top on 109.411mph, with Harrison again to the fore in second place at 108.814mph.
John McGuinness, Dominic Herbertson and Hickman were next in the order.
Both Brookes and Harrison are chasing their first-ever wins at the North West.
McWilliams was 7.7 seconds faster than his nearest rival in producing the best speed of the Supertwins/Sportbike session on 105.163mph on drying roads on his Yamaha R7.
Jordan, winner of last year’s second Supertwins event, was his closest challenger at 102.590mph, with Seeley third fastest at 101.502mph, both riding Aprilias.
Image source, PacemakerImage caption,
Josh Brookes is aiming for a first North West 200 win
