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NITTO 4340 Billet Steel crankshafts are manufactured from high quality true billet round bar stock. Most other aftermarket crankshafts are manufactured using cast forged material, which is a much cheaper manufacturing process and hence carry a cheaper price tag but their performance, strength and horsepower capabilities are significantly compromised compared to that of a true billet crankshaft. An engine with a 4340 billet steel crankshaft will rev faster and cleaner due to the different harmonics produced from the high grade material.
4340 Billet Round Bar Stock
Grade Tested (X-ray - Sonic)
Quenched and Heat Treated
Fully Counter Weighted
Nitrided
Balanced
Knife Edged (where applicable)
100% CNC Profiling
100% CNC Drilling - Tapping
ARP CUSTOM AGE 625 PLUS ROD BOLT UPGRADE, 3/8" 1.600" UHL or 7/16" 1.550" UHL available on request at extra cost. (NIT-ARP-CA38, NIT-ARP-CA716)