Callies Compstar Sport Series Nissan RB26 Billet Crankshaft 77.7mm Stroke S25004 Lubrication great with 7A short block

great with 7A short block

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and accurate

Fully recirculating valve

What's the difference between this and our basic kit

Callies Compstar Sport Series Nissan RB26 Billet Crankshaft 77.7mm Stroke S25004 Lubrication great with 7A short blockCallies 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