Swinging arm stock ACE 50/125 12mm axle.
2 Option on arms
Option 1 = Standard
Option 2 = With M10 x 1.25 pitch lugs so you can bolt on pillion foot rests
We only have the 12mm version in stock at the moment no 15mm
Take all the stock running gear, check what rear axel you have first
No bearings are in this arm