Over 40 Years Experience.Precision Crankshaft provides complete engine machining for racers and performance enthusiasts in Boise, across Idaho, and throughout the U.S. Our work has won countless championships in NHRA drag racing, ASCS sprint car, and AMA motorcycle events. Specializing in complete crankshaft services, electronic balancing, and specialty racing engines. Being a locally owned and operated shop, you can depend on superior customer service and satisfaction.We believe in detailed workmanship, because we know the difference between winning and losing can be a tenth of a second. Our experts can find you more horsepower with precision tuning on the heads, engine balancing, connecting rods, block, and engine assembly.