Not a dumb question, but I'll give you a dumb answer, no it's not a bolt on gear. I had planned on getting a retainer from Haisley before I put the cam in, but due to the circumstances I had to throw it in without it. Ordering the retainer is definately on the to-do list for the winter, I'm wondering if I can get away with installing it in the truck
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Do yourself a favor and order it and install it NOW! I only put maybe 3k miles on my aftermarket cam and the gear walked on it, which caused piston to valve contact which resulted in a dropped valve.