Charla Sobre La Manera Correcta de Corregir Un Error de Escritura en Callies Compstar Sport Series Nissan RB26 Billet Crankshaft 73.7mm Stroke S25005. Callies Compstar RB26 crankshafts are crafted from premium 4340 billet steel. This material is known for its exceptional strength and resistance to fatigue, making it ideal for demanding motorsport and high boost street builds. The manufacturing process is a multi stage affair that begins with the sourcing of semi finished crankshafts that are then shipped to Callies' facility in the USA for the crucial finishing, cryogenic treatment, nitriding, and dynamic balancing. This two part manufacturing process allows Callies to offer a high quality product at a more sensible price point. Lightweight For applications where throttle response and reduced rotating mass are critical, Callies offers lightweight versions of the Compstar RB26 crank. Full Counterweight The full counterweight design provides maximum stability at high RPMs and high boost loads, minimizing crankshaft flex and vibration, which leads to improved longevity. Wide Pin Full Counterweight A wide pin option is available for high power builds, which increases the rod bearing surface area for enhanced strength and stability. Standard Features Available in Standard and Full Counterweight 4340 Steel Certified by Callies in house Metallurgical Lab Ulta Cryo treatment performed and certified by Callies Ultra Case nitriding performed and certified by Callies All journals ground with strength enhancing Tru Form radii Rod and main journal surface finish is refined to 4Ra or less Tear drop oil hole lead ins Straight Shot Oiling No drill internal balance Aeroshed finishing optional Brand: Callies Performance Manufacturer's Part Number: S25005 Part Type: Crankshafts Product Line: Callies Compstar Sport Series Crankshafts Engine Stroke (in.): 2. 901 in Crankshaft Material: Forged 4340 steel Engine Balance: Internal Rear Main Seal Style: 1 piece Lightened: Yes Requires Narrow Bearings: Yes Rod Bearings Included: No Main Bearings Included: No Rod Journal Diameter: 47. 9mm Main Journal Diameter: 54. 9mm Crankshaft Snout Style: Standard Weight: 57. 000 lbs. Quantity: Sold individually. Notes: Fits Nissan RB26 engines.