Fluidampr Harmonic Balancer Crank Pulley for Evo X (570701)

Fluidampr harmonic balancer crankshaft pulley for the 4B11 Evo X models. This balancer helps to reduce destructive crankshaft torsional vibration lessening the wear on critical internal engine components. Vehicle Fitment: 2008-2015 Evolution X Mitsubishi 4B11 Part Number: 570701 OD: 5-7/8" Bore Diameter: 1.1028" Length: 2.213" Weight: 7.1 pounds Rotating Weight: 4.7 pounds Finish: Black Zinc STM participated in the testing and results for this product release with our 2014 Evo X! Tested and delivered up to 70% overall greater crankshaft torsional vibration control above the OE tuned elastomer style harmonic balancer on a near stock engine. Simultaneous testing indicated that the improved efficiency yielded average gains of 2 wheel-horsepower and 2lb-ft torque on a chassis dyno. Larger horsepower and torque increases due to adding a Fluidampr are expected as additional performance modifications are added. The new Fluidampr performance damper was developed under the