SKU: 74883133191

ATI Super Harmonic Street Damper - Subaru WRX / STi EJ20

$165.78 $184.20
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Description

ATI Super Harmonic Street Damper - Subaru WRX / STi EJ20These Super Damper standard harmonic balancers from ATI are specifically designed for high rpm engines. Their proven elastomer is designed and tuned to eliminate harmful crankshaft harmonics that cause parasitic horsepower loss. They are actually two dampers in one a 4 in. diameter inner damper and a 6 3 8 in., 7 in., or 8 in. diameter outer damper in two shells that bolt to the crank hub. These dampers are engineered to all but eliminate worn parts

These Super Damper standard harmonic balancers from ATI are specifically designed for high-rpm engines. Their proven elastomer is designed and tuned to eliminate harmful crankshaft harmonics that cause parasitic horsepower loss. They are actually two dampers in one--a 4 in. diameter inner damper and a 6 3/8 in., 7 in., or 8 in. diameter outer damper in two shells that bolt to the crank hub. These dampers are engineered to all but eliminate worn parts and timing problems. They're tunable in the field, rebuildable, and extremely efficient at all rpm.

The patented ATI Super Damper is the only damper designed exclusively for high performance engines.

  • Eliminates torsional crankshaft vibrations
  • Exceeds SFI 18.1 specs
  • Laser engraved 360° timing marks
  • Black zinc chromate finished
  • Damper is 3 ring and weighs 3.60lbs, hub weight is 2.20 lbs.
  • Outside diameter: 5.500in

Installation Note: ATI dampers are a 1-thousandths press fit, they do not just slide on like OEM crank pulley. They will need to be pressed onto the crank snout with a damper install kit.

Wanna learn more about engine dampers? click HERE

Lead photo used for illustration purposes.

    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 74883133191

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    4.2 ★★★★★
    Based on 2379 reviews
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    Verified Purchase
    Kathryn b.
    Battle Creek, US
    ★★★★★ 1
    Don't waste money on this one
    Ordered in January 2026. Worked good the first few times. Now it just rotates around and around the can but doesn't cut anything. I'm so disappointed because it failed shortly after my return window closed.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 5, 2026
    R
    Verified Purchase
    rosa arellano
    Natrona Heights, US
    ★★★★★ 5
    I have arthritis and it works really well and very easy to use it came fully charged that was nice.
    Very nice ;-)
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on June 7, 2026
    T
    Verified Purchase
    Tim P.
    Charlottesville, US
    ★★★★★ 5
    Easy to use! No more hand cranking.
    If you like the ease of an electric can opener, but don’t have room to store it or don’t want to drag it out when you need to use it, this is for you. I like a handheld can opener, but would get so frustrated trying to use it and turn the handle. This can opener is amazing and so easy to use. Just attach to can and push a button. It starts turning on its own and when it is done it stops. You lift it up and the lid comes off cleanly. It is rechargeable so need to worry about batteries. It tucks away in a drawer nicely. I bought my mom one too. She has arthritis in her hands so thought this would be perfect for her.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on January 10, 2026
    A
    Verified Purchase
    Albert C.
    Lowell, US
    ★★★★★ 5
    Smooth edges better than twisting
    Works a lot better than the crank style and the counter top electric and you can use the lid to reseal the can if you don't use the whole thing.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on June 3, 2026
    A
    Verified Purchase
    Amazon Customer
    Battle Creek, US
    ★★★★★ 2
    Worked for only 4 months. Now produces metal shards. Dangerous
    Pros: Can be used with one hand. I bought this to have after surgery that left me without use of one arm for a few months. The light blinks when you need to charge it. Only needs a 2-3 min charge for enough juice to open a can. Cons: IT QUIT CUTTING CORRECTLY AFTER 4 MONTHS. I now have to use both hands to hold it in place to get it to latch on to the can. It also requires a few rotations around the top to cut through the seal, resulting in METAL SHARDS! The metal shards are super sharp and almost invisible. I stabbed myself with one enough to draw blood. This is dangerous as the metal could fall into the food when pouring from the can.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on January 10, 2026

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