Isle of Man TT privateer Dan Hegarty will join Ian Mackman in the Norton team for a two-pronged assault on next year's June festival.
Hegarty made his debut in 2010 and has a fastest lap of 121.731mph, which he clocked in last year's Superbike Race. He also achieved his best place, 20th, in last year's first Supersport race.
Mackman was due to debut the new Norton V4 in last year's Senior after becoming the first man to qualify a Norton for 20 years but the weather put paid to that.
“It’s great to get a factory ride and have the opportunity to be in at the beginning of the development programme for Norton. I also look forward to working alongside Mackers who I have raced alongside before and have a great relationship with," said Hegarty.