VAC Motorsports Harmonic Damper by ATI, BMW N52/N54

The VAC/ATI design and development team brings harmonic control to the BMW N52 and N54 engines.If you are breaking crankshafts and oil pumps, the cause may be your engine harmonics. Controlling the harmonic resonance of the BMW 6 is highly important as RPMs rise, but the ideal configuration of the inline-6 motor makes even experienced engine builders overlook some fundamental principles of engine harmonics that can be destructive.Harmonics CAN destroy these motors despite their ideal 'inline six' balance.Isolate harmonics before they destroy your engine.The solution lies in the newest iteration of the VAC Motorsports High Performance Crank Damper. These dampers eliminate nearly all unstable crankshaft harmonic vibration, allowing the engine to produce more horsepower and torque, maintain reliability and ensure internal engine wear is minimized.The V1 damper is an ideal replacement for the factory crank damper and applications that do not exceed 7,200 RPM.The new V2 Dampers are a direct bolt on, just like the V1 damper, except the V2 is capable of handling RPMs up to 9,500 and withstanding greater abuse from heavy duty applications and those pushing the upper limits of the N54 engine.V2 Dampers Feature:- Integral pulley; no need for an additional pulley as with other models- Upgraded 12-Bolt Clamping Force- Upgraded elastomerto better suit applications that well exceed factory RPM- VAC's ATI Super Dampers exceed SFI 18.1 Safety Certification and are approved for competition- Made in USA- Eliminate problems with inline 6s fit with lightweight clutch and flywheel assemblies- Control destructive harmonic forces- Reduced instances of bearing wear, accessory failure and oil pump failureWe highly recommend pairing these dampers with the VAC Motorsports 4 Pin Crank HubandVAC Motorsports Crank Seal Guard.