K1 Technologies 012FAE39024 Crankshaft, Chevrolet LS1, 3.900 in. Stroke, Forged 4340 Steel
Guaranteed Fitment
Always the correct part
Added Value
Performance matched parts
In-House Experts
We know our products
Nationwide Delivery
Economy shipping
K1 Technologies crankshafts are made from 4340 forged steel, core hardened and nitride hardened for optimum strength, increased fatigue life and minimized distortion. To help ensure consistent quality each crankshaft is magnetic particle tested to ensure it is free of flaws and journal tolerances are held to +/- .0001 to ensure consistent bearing clearances.