Jeremy McWilliams in late deal for NW200 Supersport races on Burrows Engineering/RK Racing Yamaha

The 58-year-old will fill in for Cork’s Mike Browne, who sustained two broken ankles in a crash at the Cookstown 100 in Co Tyrone last month.

Browne hasn’t given up hope of competing at the Isle of Man TT, where practice gets under way on Sunday, May 29.

England’s Dominic Herbertson rode the Dungannon team’s Yamaha R6 at the Tandragee 100 last weekend and delivered a morale-boosting victory in the wet at the County Armagh course after joining the outfit as a guest rider.

Former Grand Prix winner McWilliams was already confirmed to compete at the North West in the Supertwin races on an IFS Paton backed by the Bayview Hotel.

The 58-year-old has triumphed three times in the class on 650cc Kawasaki machinery and is among the leading contenders for more Supertwin silverware.

McWilliams previously rode Supersport machinery at Northern Ireland’s premier road race in 2016, taking over Dan Kneen’s ride on the Mar-Train Racing Yamaha after the Manxman broke his arm in a mountain bike accident. He qualified 10th fastest but had a DNF in the opening Supersport race.

The vastly experienced Glengormley man said: “I’m chuffed to be riding one of John’s bikes next week at the North West.

“I’ve known John for many years and we’re good friends, so when he asked me to ride for him I was more than happy to take the opportunity.

“Unfortunately for his full-time rider, Mike Browne, he is obviously recovering from his injuries and I feel for him as I’m sure he would like to be lining up on the grid next week, but I wish him a speedy recovery and hopefully he is fit for the TT.

“In the meantime we will carry on the campaign and I’m hopeful of a decent result on the 600 next week on what I know is a well sorted machine, and I’m looking forward