Yes, you should be able to get Centax spares from Speedtech, or order direct from Hong Kong. I will be looking for the new Yokomo one-way. It's supposed to have a larger ring gear support, and the ability to be shimmed. Hope fully this will increase the survival rate of the ring & pinion gears when using a one-way equipped car. If we're really lucky they'll include a set of the machined gears they used at the Nationals & the Worlds, or at least release them as an option. I love the way the car handles with a one-way. I'll check out the thrust bearing access from the rear, if I can see it I'll buy one of the longer Hudy hex wrenchs to get to it.