Eagle 12917 12930 4340 GM LS LS1 LS2 4.000" Stroke Balanced Rotating Assembly
- 4340 Steel Crankshaft that has been heat treated and magnafluxed, with nitride journals.. hardened for wear resistance.
- 6.125 H-Beam Rods with ARP 8740 Bolts
- Forged Mahle pistons (-4cc flat top pistons)
- Clevite or King race main and rod bearings
- Precision Balanced by AMS Racing
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