The crankshaft is, by far, the most massive moving part in your engine. There s a reason for that-the crankshaft is essentially ground zero for every bit of the torque your high-performance engine is capable of producing. It s pistons connected to connecting rods, which in turn are connected to the crankshaft, pounding down intermittently with incredible force. Meanwhile, at the back, the crank is connected to the clutch-and eventually the wheels-which are trying to resist acceleration. The same thing is going on at the front where the water pump, alternator, and other power-robbing assemblies are providing resistance. The result is a multitude of twisting forces applied to the crankshaft the entire time the engine is running. The stresses are multiplied in a racing situation in which the rpm levels can get quite extreme, and the frequent transitions from wide-open throttle to zero throttle only add to the equation. Factory crankshafts aren't made with optimal strength in mind. Automotive manufactures must cut costs and materials and design crankshafts to withstand long periods of low rpm operation at idle or in stop and go traffic. The complete opposite of spirited driving.
Crankshafts that are purpose-built for racing are almost exclusively either forged or constructed from a piece of billet steel. Forging offers supplemental strength over cast pieces in addition to other advantages. Forgings produce a stronger grain structure and, are exceptionally strong. All Tomei Crankshafts are machined and balanced, preventing vibration and excessive engine wear.
Features:
- Stroke: 94.40mm
- Weight: 20.9kg
- Crank Pin: 56mm
- Main Journal: 65mm
⚠️ California Proposition 65 Warning:
This product may expose you to chemicals known to the State of California
to cause cancer or reproductive harm.
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Fitment guides and tools are helpful—but your car is unique! Some trims and options aren’t always listed, so if you want 100% confidence that a part will fit, our team is happy to double-check for you. We take the guesswork out of your purchase by standing behind our expertise.
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