PBM Performance Products offers a wide range of rotating assemblies such as their Ultimate Billet Series, 4340 Ultralite, 4340 Superlites, and Standard Weight Forged Crankshafts. Hundreds of stroke and bore combinations are available.
Custom assemblies are a specialty. PBM rotating assemblies have a proven reputation of quality, durability and performance.
For more info: http://www.pbm-erson.com/