If you have any kind of bearing shop/distributer, they can usually match up exactly what you have if you just show them one. They'll measure it.

Click the link Carl gave you.

Click on one of the bearing sets.

Click on "Kit Components".

You'll see that one bearing is ID 0.3750in x OD 0.8750in x Width 0.2812in, and the other is ID 16mm x OD 30mm x Width 7mm.

Good luck.

  I would check if they would ship to Brazil. I believe the rear bearing, at least, is some oddball proprietary size unique to OS. Until Boca came along (and presumably had someone "adjust" a standard bearing), they were essentially unobtainable, and I checked A LOT of sources.

    I use the least-expensive type they sell. They are *much better* than the stock parts. The bearings are just about the only part that ever wears out/fails on a VF ABC, at least in any amount of flying you are ever likely to do with it. It is possible to wear out the piston/liner but only at Walker-esque amounts of flying and only after many seasons.


    Brett