Stock bars are; front, hollow;30mm. Rear, hollow; 18mm
Whiteline Group Buy are Front, solid 32mm Blade adjustable. Rear, solid; 20mm Blade adjustable.
Correct. I used the same dimensions as the original Sydneykid bars (as fitted to Andy's, and others) 30mm solid front, & 24mm solid rear for my first Group Buy through Signature.
I have no reason to believe the AR-X has different OEM bars to any other NM35, and the part numbers back this up.