Yes, you can buy the bearing, but you should consider buying a pattern flush trim bit from MLCS, the #6509 is perfect for template routing for pickups, since it's only 1/2" long you won't have such a deep plunge when making your first pass. It's worth the investment.
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Thanks man, that looks like it will work perfectly! I just found a kit for the bearing on the internet, looks like its better to buy the bit.