VAC Motorsports ATI Harmonic Damper for BMW S54

Protect your S54 engine from harmful crankshaft vibrations with the VAC Motorsports ATI Harmonic Damper. Developed in partnership with ATI, this competition-proven damper helps control destructive harmonics, reducing the risk of bearing wear, oil pump failure, and accessory damage. Trusted by professional racers running up to 10,000 RPM, it delivers reliable performance for both street and track applications.

Features

• Controls harmful engine harmonics and vibration
• Helps reduce bearing, oil pump, and accessory failures
• Direct bolt-on installation when used with the included VAC Crank Pulley
• Lightweight billet aluminum crank pulley included
• OEM-style timing alignment tabs
• Exceeds SFI 18.1 Safety Certification
• Made in the USA
• Compatible with naturally aspirated, stroker, supercharged, and dry sump applications

Kit Includes

• ATI/VAC S54 Harmonic Damper
• VAC Crank Pulley
• VAC Installation Hardware

Available Versions

• Standard Diameter
• Overdrive (Recommended for Supercharged Applications)
• Underdrive

Note: Requires the VAC Underdrive Power Pulley. Not compatible with the factory damper pulley.