Harmonic Damper - SFI - Dodge 8.0L Viper Gen 1&2

The ATI Performance Harmonic Damper for the Dodge 8.0L Viper Gen 1 and Gen 2 is a precision-engineered crankshaft balancer designed to control torsional vibration and protect engine internals during high-rpm operation. This SFI 18.1-certified component replaces the original equipment balancer with a purpose-built harmonic damper engineered for the specific resonant frequencies of the 8.0-liter V10 powerplant found in 1992–2002 Viper models.

Built from steel with black oxide coating, this 7.074-inch outside diameter damper features internal balance design, meaning the counterweight is machined into the hub itself rather than added as a separate component. The internal balance configuration preserves the OEM crankshaft balance specifications while upgrading damping performance. The SFI 18.1 rating confirms compliance with automotive safety and performance standards, making this damper suitable for high-performance driving, street applications, and engine builds that demand reliable crankshaft protection. At 8.64 pounds, the damper maintains the weight characteristics necessary for proper engine balance.

Viper owners upgrading to performance camshafts, modified ignition timing, or increased boost pressures benefit most from this balancer, as these modifications increase torsional stress on the crankshaft. The harmonic damper reduces vibration transfer to the block, extends crankshaft life, and improves overall drivability by minimizing NVH (noise, vibration, harshness) at peak rpm. ATI Performance's harmonic dampers are recognized in the Mopar performance community for precision manufacturing and durability under sustained high-rpm use. Direct bolt-on replacement for original Viper balancers simplifies installation and ensures correct fitment without modification.