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Another part we would describe as beautiful was this Lunati Pro Series crank. Forged from 4340 certified steel, this American-made and machined crank will handle the tons of abuse we plan to heap on it. The journal radii are ground to .140 inch, roundness of each journal is .0001 inch or less, and each rod journal incorporates a lightening hole to reduce inertia weight. We decided to go big with a 4.250-inch stroke crank (PN JP711ER, $1,731).