ATI Super Damper - Nissan SR20 RWD 5.67" (4 & 5 Groove) Street Aluminum

Protect your Nissan SR20 RWD engine with the ATI Super Damper harmonic balancer. Featuring a 5.67" aluminum construction with 4 and 5 groove pulleys, SFI 18.1 certification, and rebuildable design, this premium damper eliminates damaging crankshaft harmonic vibrations for maximum performance and engine longevity.

Key Features:

• ATI Super Damper for Nissan SR20 RWD engines
• 5.67" diameter aluminum construction
• Dual pulley design: 4 groove and 5 groove
• SFI 18.1 certified for safety
• Rebuildable design for long-term use
• Eliminates damaging harmonic vibrations
• Street application (1-piece design)
• Premium ATI quality
• Made in USA

Performance Benefits:

• Eliminates Vibrations: Protects crankshaft from damaging harmonic vibrations
• SFI 18.1 Certified: Meets strict safety standards for performance use
• Rebuildable: Can be serviced and rebuilt for extended life
• Dual Groove Pulleys: 4 and 5 groove options for accessory drive flexibility
• Aluminum Construction: Lightweight yet durable
• Engine Protection: Extends engine life by reducing crankshaft stress

Specifications:

• Brand: ATI Performance Products
• Part Number: 918582
• Product: Super Damper Harmonic Balancer
• Diameter: 5.67 inches
• Material: Aluminum
• Pulleys: 4 groove and 5 groove
• Design: 1-piece (street application)
• Certification: SFI 18.1
• Rebuildable: Yes
• Weight: 6.5 lbs
• Made in: USA

Fitment Information:

• Compatible Engines:
• Nissan SR20DET (RWD applications)
• Nissan SR20DE (RWD applications)
• Common Vehicles:
• Nissan 240SX (S13, S14, S15 with SR20 swap)
• Nissan Silvia (S13, S14, S15)
• Other RWD SR20 applications
• IMPORTANT: Designed for RWD SR20 engines only - will NOT fit FWD SR20

What's Included:

• ATI Super Damper harmonic balancer (complete assembly)

Installation Notes:

• Professional installation STRONGLY recommended
• Engine must be removed or crankshaft accessed for installation
• Use proper installation tools to avoid damaging damper
• Torque crankshaft bolt to Nissan specification
• Verify pulley alignment after installation

Eliminates Harmonic Vibrations:

The ATI Super Damper uses a unique elastomer (rubber) design to absorb and dissipate harmful crankshaft harmonic vibrations. These vibrations occur naturally in all engines and can cause crankshaft failure, bearing damage, and reduced engine life. The Super Damper's advanced design eliminates these vibrations across the entire RPM range, protecting your engine and allowing it to produce maximum power safely.

SFI 18.1 Certified:

The ATI Super Damper is SFI 18.1 certified, meeting strict safety standards for harmonic balancers used in performance and racing applications. SFI certification ensures the damper has been tested to withstand extreme conditions and will not fail catastrophically. Many racing sanctioning bodies require SFI 18.1 certification for harmonic dampers.

Rebuildable Design:

Unlike traditional harmonic balancers that must be replaced when worn, the ATI Super Damper is rebuildable. The elastomer ring can be replaced when it wears out, extending the damper's service life indefinitely. This rebuildable design makes the Super Damper a cost-effective long-term solution for serious performance builds.

4 and 5 Groove Pulleys:

The dual pulley design features both 4 groove and 5 groove pulleys, providing flexibility for different accessory drive configurations. The 4 groove pulley is typically used for alternator drive, while the 5 groove pulley can accommodate power steering and other accessories. This dual design eliminates the need to purchase separate dampers for different setups.

Why ATI Performance Products?

ATI Performance Products has been manufacturing premium harmonic dampers in the USA for over 25 years. Their Super Dampers are engineered to provide superior harmonic damper performance and protection for high-performance engines. ATI dampers are trusted by professional race teams and engine builders worldwide for proven reliability and performance. Every ATI damper is manufactured to strict quality standards and tested extensively.

Installation Tips:

• Remove factory harmonic balancer
• Clean crankshaft snout thoroughly
• Install ATI Super Damper using proper installation tool
• Do NOT hammer damper onto crankshaft
• Torque crankshaft bolt to Nissan specification
• Verify pulley alignment with accessory pulleys
• Check belt tension after installation

Perfect For:

• Nissan SR20 RWD engine builds (240SX, Silvia)
• Turbocharged SR20DET applications requiring harmonic protection
• High-RPM naturally aspirated SR20DE builds
• Track day and drift cars needing SFI certification
• Anyone seeking maximum engine protection and longevity

Perfect For: Nissan SR20 RWD engines seeking ATI Super Damper with 5.67" aluminum construction, 4 & 5 groove pulleys, SFI 18.1 certification, and rebuildable design.

Pro Tip: The rebuildable design allows you to replace the elastomer ring when worn - extends damper life indefinitely.

Made in USA: Premium ATI quality. SFI 18.1 certified. RWD SR20 only - will NOT fit FWD.

Protect your SR20 with ATI Super Damper - 5.67" aluminum, 4 & 5 groove, eliminates vibrations, SFI certified, rebuildable, street use, made in USA.