Eagle Chevrolet BB 1Pc Rear Seal 4.000in Stroke Internal Balance Forged 4340 Steel Crankshaft - 445640046135

Eagle forged 4340 steel Cranks feature a non-twist forging, .125" fillet radiuses for superior strength so chamfered / narrowed bearings required, nitrided surface and micropolished. Intended for the most demanding applications.