Rotating assemblies are balanced in-house to the finest tolerances on a Turner Technology dynamic plane offset crankshaft balancer.
You must supply your crankshaft, crank gear assembly, flywheel, gland nut, cultch pressure plate, crank pulley and pulley bolt.
For extremely high rpm engines, consider having your crank assembly balanced to 2 grams-25mm (0.07 ounce-inch). Contact me for more info and pricing.
Crank balancing: 82mm crank, chromoly flywheel, billet steel pulley, stock crank gear assembly
Balancing an 86mm Scat superlight flanged crankshaft, lightweight aluminium flywheel with steel insert, J&G aluminium floater clutch assembly, JayCee crank trigger pulley
More balancing info:
Part 4 of Project 2110 looks at the theory and practice of dynamically balancing an 82mm crankshaft, 200mm flywheel, Kennedy clutch and billet steel crankshaft pulley [link to article]