Crankshafts

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.
Manley Crankshaft, CRANK-4340 BILLET 3.622 STROKE CCW.

• 4340 Construction: Forged or Turbo Tuff billet for superior strength
• Gun-drilled mains and lightened journals cut weight
• Heat-treated and nitrided for durability
• Micro-polished journals reduce friction
• 100% magnaflux-inspected

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.
Manley Crankshaft, CRANK-4340 BILLET 4.000 STROKE CCW.

• 4340 Construction: Forged or Turbo Tuff billet for superior strength
• Gun-drilled mains and lightened journals cut weight
• Heat-treated and nitrided for durability
• Micro-polished journals reduce friction
• 100% magnaflux-inspected

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.
Manley Crankshaft, CRANK-4340 BILLET 3.622 STROKE CCW.

• 4340 Construction: Forged or Turbo Tuff billet for superior strength
• Gun-drilled mains and lightened journals cut weight
• Heat-treated and nitrided for durability
• Micro-polished journals reduce friction
• 100% magnaflux-inspected

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.

• Rigorous Quality Assurance: Each crankshaft undergoes stress relief, shot peening, and 100% magnafluxing to meet our stringent quality standards.
• Lightweight Design, 4340 Non-Twist Forging: Our crankshafts feature a lightweight 4340 non-twist forging, ensuring durability and performance.
• 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.

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.

• Rigorous Quality Assurance: Each crankshaft undergoes stress relief, shot peening, and 100% magnafluxing to meet our stringent quality standards.
• Lightweight Design, 4340 Non-Twist Forging: Our crankshafts feature a lightweight 4340 non-twist forging, ensuring durability and performance.
• 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.

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.

• Rigorous Quality Assurance: Each crankshaft undergoes stress relief, shot peening, and 100% magnafluxing to meet our stringent quality standards.
• Lightweight Design, 4340 Non-Twist Forging: Our crankshafts feature a lightweight 4340 non-twist forging, ensuring durability and performance.
• 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.

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.

• Rigorous Quality Assurance: Each crankshaft undergoes stress relief, shot peening, and 100% magnafluxing to meet our stringent quality standards.
• Lightweight Design, 4340 Non-Twist Forging: Our crankshafts feature a lightweight 4340 non-twist forging, ensuring durability and performance.
• 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.

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.

• Rigorous Quality Assurance: Each crankshaft undergoes stress relief, shot peening, and 100% magnafluxing to meet our stringent quality standards.
• Lightweight Design, 4340 Non-Twist Forging: Our crankshafts feature a lightweight 4340 non-twist forging, ensuring durability and performance.
• 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.

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.
Manley Crankshaft, CRANK-4340 4.000 STROKE.

• 4340 Construction: Forged or Turbo Tuff billet for superior strength
• Gun-drilled mains and lightened journals cut weight
• Heat-treated and nitrided for durability
• Micro-polished journals reduce friction
• 100% magnaflux-inspected

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.
Stroke: 4.000 in. – Min. Rod Length: 6.125 in. – Main Journal: 2.559″ – Rod Journal: 2.100 in.
Manley Crankshaft, CRANK-4340 4.000 STROKE.

• 4340 Construction: Forged or Turbo Tuff billet for superior strength
• Gun-drilled mains and lightened journals cut weight
• Heat-treated and nitrided for durability
• Micro-polished journals reduce friction
• 100% magnaflux-inspected

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.
Manley Crankshaft, CRANK-4340 4.000 STROKE.

• 4340 Construction: Forged or Turbo Tuff billet for superior strength
• Gun-drilled mains and lightened journals cut weight
• Heat-treated and nitrided for durability
• Micro-polished journals reduce friction
• 100% magnaflux-inspected