Sale

ATI Performance

Super Damper Harmonic Balancer

$421.84 $385.90 Save $35.94

SKU: 918487

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The ATI Performance 918487 Super Damper is a patented harmonic balancer exclusively designed for high-performance engines, including Gen III Hemi 5.7L and 6.4L applications. It provides balanced dampening of torsional crankshaft vibrations across all RPM ranges, eliminating harmful torsional vibrations. This damper exceeds SFI 18.1 specifications and features laser-engraved 360-degree timing marks for precise engine tuning. The construction involves inner and outer shells made from aluminum, housing a steel inertia weight. The unit is finished in black zinc chromate and comes with a new crank bolt and a smaller diameter washer. This harmonic balancer is highly recommended for heavily modified engine packages, including stroker engines and applications involving significant boost. Its design includes a 15% underdrive, measured at a 5.67-inch outer diameter, which can help reduce accessory drag while maintaining smooth operation, making it ideal for high-RPM use. The internal balance design is also a key feature for optimized performance. It comes with a new crank bolt and washer for installation.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandATI Performance
Part Number918487
CategoryEngines and Components

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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