Perpetual Balance in Arlington, WA specializes in Engine balancing and industrial balancing services. All rebuilt automotive engines need a custom balance. Precision balancing your rotating assembly with a custom bob weight, custom balanced by Perpetual Balance, will far exceed OEM specs giving you improved fuel economy with greater horsepower, smoother operation, and up to 100 percent longer engine life. Perpetual Balance provides custom precision balancing services to fans, electric motors, shafts, pumps, rods, flywheels, flex plates, dampers, pistons, rotating assemblies, electric motor assemblies, pump assemblies, and more! Our scales measure to 1/10th of a gram! With over 30 years of experience, Perpetual Balance proudly serves all of Washington State from our Snohomish County WA location near the Arlington Airport. Distributor of: Scat Crankshafts And Scat Rotating Assemblies Power Bond Harmonic Dampers Pioneer Flex Plates And Flywheels Damper Dudes Rebuilt Harmonic Dampers