Our Pro Series 4340 alloy steel crankshafts are available with many value packed and high-performance enhancing features for a wide range of domestic engine applications.

  • Lightweight Design: Manufactured from a premium 4340 steel forging, gun drilled mains and lightened rod journals contribute to weight reduction and optimize engine performance. Counterweights are fully profiled to ensure precise balance and stability.
  • Enhanced Strength: A multi-step heat treatment process and nitriding enhance the crankshafts strength and longevity.
  • Micro-Polished Journals: Large radius journals are micro-polished to reduce friction and enhance performance.
  • Rigorous Quality Assurance: Each crankshaft undergoes stress relief, shot peening, and 100% magnafluxing to meet our stringent quality standards.
  • Increase Displacement with a Stroker Crankshaft: These crankshafts feature a 4.050 stroke which can turn your 5.7L into a 392 c.i. engine and your 6.1L/6.4L into a 426 c.i. engine.

More From This Category

MANLEY Crankshaft, Forged 4340 Steel, 3.622 in. Stroke, Lightweight, 24 Tooth, Reluctor, Each

MANLEY Crankshaft, Forged 4340 Steel, 3.622 in. Stroke, Lightweight, 24 Tooth, Reluctor, Each

$2,566.49

Nitto Stoker Kit for Nissan SR20 2.2L (I-Beam Rods/87mm Bore) - EN40B

Nitto Stoker Kit for Nissan SR20 2.2L (I-Beam Rods/87mm Bore) - EN40B

$6,935.00