Premium engine protection from street to pro-competition. Fluidampr performance dampers provide long term durability, plus unleash lost torque and horsepower, by controlling destructive crankshaft torsional vibration throughout your entire rpm range. Install as an upgrade to OEM elastomer style harmonic balancer whenever engine modifications are made. Features enhanced superior viscous damper technology with precision CNC machined and computer balanced high-grade steel components. No tuning or maintenance required. SFI 18.1 approved, race proven for over 25 years. Made in USA. ISO 9001:2008 certified company.