Styke and Marmont also in for Western Australian race.
Current MX Nationals red plate holder and reigning Manjimup 15,000 champion Kirk Gibbs will defend his title when the 2015 running takes place at Cosy Creek on 7 June.
Gibbs will line up alongside KTM Motocross Racing Team teammate Luke Styke in the Western Australian event, while retired four-time national champion Jay Marmont is also a surprise inclusion on the entry list.
“It’s always exciting going to Manjimup,” Gibbs said. “I really like the track there and it’s a no pressure race, so we always have a lot of fun. It’s such a well known event and I’m such a big fan of the track. Also with KTM being based in Perth, it works out well to come over, race and get to see everyone.
“It’s always a great line-up of riders that race Manjimup, so I didn’t expect anything different this year. It will be tough and any of those riders could win. And the feature, with the one-lap races, will be very challenging, but for me it’s to have fun. If I win, that’s a bonus, but if not, it’s not a massive deal.”
It was previously confirmed that the international contingent will this year be made up of popular American Josh Hill and Kiwi talent Brad Groombridge.