Australian duo Cameron Donald and David Johnson will lead Norton's challenge at next year's Isle of Man TT races.

Johnson is a new face in the team alongside experienced double Mountain Course winner Donald, who has fronted the British marque's interests at the TT since 2014.

The pair will compete in the RST Superbike and PokerStars Senior TT on the SG5 Norton.

Former British Superstock and Supersport champion Glenn Richards has been brought in as development rider with seven-time TT winner Mick Grant continuing as team advisor.

Donald, who won the Superbike and Superstock races at the TT in 2008, said: "We've now done a huge amount of development work at the Isle of Man and having that continuity will really help us to make more progress at next year's TT.

"It will be good to have two bikes out and I'm sure Dave and I will be comparing notes every session to help each other."

Fellow countryman Johnson, who made his TT debut in 2010 winning the Newcomers Trophy, is one of road racing's rising stars.

His best TT result was fourth in last year's Superstock race and he has lapped the 37.73-mile course at 131.595mph, making him the ninth fastest rider in history.

"It's going to be an incredible experience at next year's TT," said Johnson.

"Riding a Norton around the Isle of Man Mountain Course, and with Cameron Donald as my teammate is a massive honour. I'm really stoked and will give it my best shot."

Norton Motorcycles' CEO, Stuart Garner, said the new-look line-up would provide the team's best opportunity yet at the Isle of Man TT in 2016.

"We've made incredible progress since taking Norton back to the TT and it's testament to the hard work that's gone in by everyone at the factory as well as the feedback that we've had from Cameron," he said.

"This was always going to be a long term project and we're definitely on the next stage of our evolution, running a two man team with Glenn Richards testing and Mick Grant advising will give us the best opportunity to move things forward even more at next year's TT."