ATI 918598 Super Damper for 1995-2002 Nissan Skyline R33/R34 RB26DETT

Vehicle Fitment

• 1995-2002 Nissan Skyline GTR (R33/R34) - RB26DETT 2.6 L I6

Features

• Dampens torsional crankshaft vibrations across all RPM
• Eliminates harmful engine harmonics for increased reliability
• 16% under-drive for power steering, 6% under-drive for alternator, A/C & water pump
• Laser-etched 360° timing marks for precise ignition timing
• SFI 18.1 certified for high-performance or competition use
• Rebuildable and tunable design
• Aluminum shell for weight saving without sacrificing strength
• Compact 5.5" outer diameter fits in tight engine bays

Specifications

• Part Number: ATI 918598
• Outer Diameter: 5.5"
• Weight: ~3.6 lb
• Under-Drive: 16% for power steering, 6% for alternator, A/C, water pump
• 3-ring design for optimal damping
• Material: Aluminum shell with steel hub
• SFI Rating: 18.1 certified
• Max Supported Power: ~750 hp

Included Components

• 1x ATI 918598 Super Damper (3-ring, aluminum)

Product Description

The ATI 918598 Super Damper is a high-performance harmonic balancer designed for the RB26DETT engine in Nissan Skyline R33 and R34 GTR models. Its 5.5" aluminum shell and steel hub control crankshaft torsional vibrations across the entire rev range, improving engine stability and longevity.

It features a 16% under-drive for the power steering pulley and 6% under-drive for accessory pulleys, reducing accessory drag and freeing up power. Laser-etched 360° timing marks allow precise tuning, and SFI 18.1 certification ensures suitability for street and competition use. The 3-ring design supports up to ~750 hp, making it ideal for high-performance builds.

Installation is bolt-on for R33/R34 GTR chassis. Slight belt adjustments may be required due to under-drive. This damper provides an optimal balance of weight, durability, and harmonic control for street or track RB26 engines.