Brand New In the Box 74mm crank fits 912 and 356 engines... counter weight... Crankshaft is CNC machined form 4340 aircraft quality steel with vacuum degassed forging process to providesuperior strength.Each crankshaft has been:... visually inspected... X-rayed... magnafluxed... ultrasonic tested to ensure perfection... All cranks are heavier at...
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