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YD0253a Cosworth 94mm Stroke Billet Crankshaft Mazda Miata MZR 2.3L Our Price: $2790.99 Cosworth 94mm Stroke Billet Crankshaft Mazda Miata MZR 2.3L Increased engine performance often means increased engine speed and load. Original factory crankshafts may not be able to withstand the added stress resulting in catastrophic failure. Cosworth billet crankshafts are machined from ultra strong EN40B steel and are engineered to endure the harshest conditions and have been tested to withstand over 1000HP! Features include superior lubrication, profiled counterweights and added strength. ...