we're providing the core strength your engine build demands. The Pro Series 4340 Alloy Steel Crankshaft is an efficient and precisely balanced foundation for performance, built not just to survive, but to handle extremes across a wide range of applications.
4340 Construction: Forged or Turbo Tuff billet for superior strength
Manley Chevrolet LS Forged Crankshaft - 4.100 in. Stroke
Manley Chevrolet LS Forged Crankshaft - 4.100in Stroke
Gun-drilled mains and lightened journals cut weight
Manley Crankshaft, CRANK-4340 FORGE 4.100 STROKE.
Manley Crankshaft, CRANK-4340 FORGE 4.100 STROKE
Manley Performance isn't just selling components
Manley Crankshaft, 4340 FORGE 4.100 STROKE
Heat-treated and nitrided for durability
Micro-polished journals reduce friction
CRANK-4340 FORGE 4.100 STROKE
100% magnaflux-inspected
Engine Crankshaft
Crankshaft
