A crankshaft appears to be a strong, solid chunk of metal, not something that you could envision twisting and flexing, but that’s exactly what occurs during engine operation. The center part of the crankshaft, the main bearing journals, are held in place in the engine block by the main bearings and caps. However, the crank throws, to which the pistons and connecting rods are attached, are offset to the side, and it’s here where tremendous force is applied.

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    • (0 reviews)
      # sp90493
      Fluid Damper Kit by March Performance®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...
      High quality at an affordable priceExpertly made from premium materials
      $515.30
    • (0 reviews)
      # sp85363
      Harmonic Balancer by March Performance®. Performance Series Increases horsepower by reducing accessory drag. 12.5 H.P. at rear wheels typical. Eliminates belt throwith ing. Designed for normal street driving.
      High quality at an affordable priceExpertly made from premium materials
      $178.93
    • (0 reviews)
      # sp24124
      Harmonic Balancer by Weiand®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by Weiand will last a lifetime. It...
      Made with precision and quality in mindBuilt to last
      $154.95
    • (1 review)
      # sp13783
      Harmonic Balancer by Proform®. If you are looking to enhance your vehicle's performance, then this top-notch product is definitely what you need. Manufactured from premium quality materials this Proform product provides efficient...
      Carefully designed to improve the performance of your vehicleCrafted from first-rate materials
      $78.23 - $108.72
    • (0 reviews)
      # sp13796
      Harmonic Balancer Cover by Proform®. If you are looking to enhance your vehicle's performance, then this top-notch product is definitely what you need. Manufactured from premium quality materials this Proform product provides...
      Carefully designed to improve the performance of your vehicleCrafted from first-rate materials
      +3
      $30.78 - $33.90
    • (0 reviews)
      # sp13794
      Officially Licensed GM Harmonic Balancer Cover by Proform®. If you are looking to enhance your vehicle's performance, then this top-notch product is definitely what you need. Manufactured from premium quality materials this Proform...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $36.16 - $37.44
    • (0 reviews)
      # sp15854
      Harmonic Damper Bolt Kit by ARP®. As the crankshaft flexes and twists, the harmonic damper absorbs incredible amounts of kinetic energy. To ensure that the damper is locked in position, ARP has developed these ultra strong 200,000...
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $28.84 - $51.89
    • (0 reviews)
      # sp16126
      Rod Bolt Kit by ARP®. Finish: Black. Material: 8740 Chrome Moly. Quantity: Set of 2. Package Type: Skin. Far superior to any other main bolts available for use in competition engines, ARP main bolts are designed to meet the...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $8.24 - $911.09
    • (0 reviews)
      # sp83483
      Xtreme Damper by PPE®. 16.5 lbs. If your truck is producing extreme horsepower, then it needs a PPE Xtreme Damper. A direct replacement for the OEM unit, PPE’s Xtreme Damper is especially needed in high performance and modified...
      Thoughtfully designed to match your diesel engine needsMade to help enhance the performance of your vehicle
      $539.99
    • (0 reviews)
      # sp6027
      Diesel Performance Race Harmonic Balancer by Dayco®. This product is a high performance alternative for diesel powered vehicles. To ensure this balancer provides nothing less than the highest level of quality and durability, it's...
      Designed as a high performance alternative for diesel powered vehicleStrong billet steel construction for superior durability
      $328.68 - $407.68
    • (0 reviews)
      # sp6029
      PowerBond™ Race Series Harmonic Balancer by Dayco®. This product is designed to bring all the advantages of bonded balancers to high revving and high horsepower street/race applications where an SFI approved balancer is required....
      Designed for high revving and high horsepower street/race applications where an SFI approved balancer is requiredPrecision CNC machined AISI 1045 forged steel hub
      $111.72 - $349.26
    • (0 reviews)
      # sp6030
      PowerBond™ Street Performance Harmonic Balancer by Dayco®. This product provides bonded balancer technology at an economical price. With bonded dampening rubber, a pressure-bonded high strength SG (Spheroidal Graphite) iron ring...
      Provides all the advantages of bonded balancer technology at an affordable priceCan be used for limited spec race classes, such as late model stock that require an OEM style balancer
      $94.49 - $361.54
    • (0 reviews)
      # sp6031
      Supercharger Performance Harmonic Balancer by Dayco®. Specially developed for high performance supercharged engines, this product by Dayco features a high pressure bonded dampening runner for maximum torque resistance and twin...
      Constructed for high performance supercharged enginesTwin keyways for secure crank mounting with six pulley bolt hole pattern
      $174.10 - $373.86
    • (0 reviews)
      # sp28642
      Harmonic Balancer Damper Crank Pulley by ATI Performance®. The patented ATI Super Damper is the only crankshaft damper designed exclusively for high performance Chevy engines. Designed utilizing the latest technology, this product...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $371.70 - $623.56
    • (0 reviews)
      # sp28638
      Damper Bolt Pack by ATI Performance®. Designed utilizing the latest technology, this product by ATI Performance features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $9.49
    • (0 reviews)
      # sp28640
      Harmonic Damper Crankshaft Hub by ATI Performance®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $100.26 - $157.39
    • (0 reviews)
      # sp28645
      Harmonic Supercharged Damper Crankshaft Hub by ATI Performance®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $150.72
    • (0 reviews)
      # sp28641
      Super Damper Harmonic Damper Steel Shell Assembly by ATI Performance®. The patented ATI Super Damper is the only damper designed exclusively for high performance Ford engines
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $280.00 - $514.26
    • (0 reviews)
      # sp28644
      Super Damper Harmonic Steel Shell Assembly by ATI Performance®. 3 ring. The patented ATI Super Damper is the only crankshaft damper designed exclusively for high performance Chevy engines.
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $327.92
    • (0 reviews)
      # sp28639
      Super Damper® Harmonic Damper Assembly by ATI Performance®. The patented ATI Super Damper is the only crankshaft damper designed exclusively for high performance Chevy engines.
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $324.38 - $476.43
    • (0 reviews)
      # sp28643
      Super Damper™ Harmonic Serpentine Damper Steel Shell Assembly by ATI Performance®. The patented ATI Super Damper is the only crankshaft damper designed exclusively for high performance Chevy engines.
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $441.39 - $515.66
    • (0 reviews)
      # sp28646
      Super Damper™ Harmonic Supercharged Damper Steel Assembly by ATI Performance®. The patented ATI Super Damper is the only crankshaft damper designed exclusively for high performance Chevy engines.
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $436.38 - $531.07
    • (0 reviews)
      # sp28647
      Super Damper™ Harmonic Supercharged Damper Steel Shell Assembly by ATI Performance®. The patented ATI Super Damper is the only damper designed exclusively for high performance Ford engines.
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $399.18 - $483.43
    • (0 reviews)
      # sp28648
      Super Damper™ Harmonic Supercharged Steel Shell Assembly by ATI Performance®. Blower drive with 3/8" pulley bolts. Steel 3-ring design damper only. Maximum outer diameter - 7.074". The patented ATI Super Damper is the only...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $324.38
    • (0 reviews)
      # sp88508
      E-Performance Harmonic Damper by BHJ®. BHJ's E-Performance dampers are an economical, nodular iron alternative for use in high-performance applications where SFI certification is not required. The E-Performance damper series is...
      State-of-the-art development technology and unrivaled craftsmanshipPrecisely tuned for outstanding performance and long service life
      $187.26 - $220.31
    • (0 reviews)
      # sp88509
      Harmonic Damper by BHJ®. SFI 18.1 Certified. BHJ Harmonic Dampers offer the most precise and advanced execution of the proven elastomer-style Harmonic Damper (also called Torsional Vibration Damper) design. Most engine designers...
      State-of-the-art development technology and unrivaled craftsmanshipPrecisely tuned for outstanding performance and long service life
      $353.16 - $448.60
    • (0 reviews)
      # sp29868
      Balancer Bolt Kit by Big End Performance®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...
      High quality at an affordable priceExpertly made from premium materials
      $6.92
    • (0 reviews)
      # sp21608
      CT Gold Performance Damper by Fluidampr®. Engineered for today's pro-racing, Fluidampr CT Gold series performance dampers provides premium, long lasting protection from damaging torsional vibrations. All new centering technology...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $368.02 - $553.84
    • (0 reviews)
      # sp21610
      Performance Damper by Fluidampr®. Protect your engine. Fluidampr performance dampers provide broad range control of destructive crankshaft torsional vibration for optimum horsepower and durability. Install early whenever engine...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      +1
      $183.80 - $637.95
    • (0 reviews)
      # sp21611
      Streetdampr Performance Damper by Fluidampr®. Great value for non-SFI required applications. A Streetdampr by Fluidampr provides premium, broad range control of destructive crankshaft torsional vibration for optimum performance and...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $263.66 - $298.61
    • (0 reviews)
      # sp92329
      Crankshaft Damper by Ford Performance®. Turn your Ford into a high-performance street and drag strip monster with top-of-the-line Ford Performance parts that will help you get the most out of it. Featuring the latest advancements...
      Designed to help you get the most out of your vehiclePerfect for use in high-performance environments
      $346.79 - $414.93
    • (0 reviews)
      # sp92330
      Crankshaft Damper Kit by Ford Performance®. Kit includes E4TZ-A crankshaft damper and FITZ-A timing pointer. 50 oz.-in.balance factor. Crankshaft damper overall length is 3.950". Four bolt pulley pattern.
      Designed to help you get the most out of your vehiclePerfect for use in high-performance environments
      $95.46
    • (0 reviews)
      # sp92331
      Crankshaft Damper Spacer by Ford Performance®. Crankshaft Damper Spacer by Ford Performance®, 1 Piece. Same as discontinued production service part D9TZ-6359-A. Turn your Ford into a high-performance street and drag strip monster...
      Designed to help you get the most out of your vehiclePerfect for use in high-performance environments
      $77.45
    • (0 reviews)
      # sp23502
      Ultra-Seal™ Harmonic Balancer Bolt/Washer Kit by Mr. Gasket®. Building up a new engine for your ride? Mr. Gasket has the gaskets, fasteners and other internal parts for building a race engine vs. a street motor.
      Mr. Gasket is the first place to look for a gasket set, of courseEngine fasteners don’t have to be black any more - go chrome
      $8.37 - $22.97
    • (0 reviews)
      # sp23511
      Precision Timing Tape by Mr. Gasket®. Building up a new engine for your ride? Mr. Gasket has the gaskets, fasteners and other internal parts for building a race engine vs. a street motor.
      Mr. Gasket is the first place to look for a gasket set, of courseEngine fasteners don’t have to be black any more - go chrome
      $10.48 - $12.58
    • (0 reviews)
      # sp87727
      Race Steel Performance Harmonic Balancer by PowerBond®. Race series brings the advantages of bonded balancers to high revving and high horsepower street/race applications where an SFI approved balancer is required. PowerBond Race...
      Engineered to absorb and reduce harmonic vibrationsMade from sturdy materials to deliver exceptional strength
      $151.46 - $275.39
    • (0 reviews)
      # sp83108
      Race Underdrive Steel Performance Harmonic Balancer by PowerBond®. Under-driving balancers are a high performance alternative. Changing the balancer diameter can alter the performance of the accessories and engine rev speeds.
      Engineered to absorb and reduce harmonic vibrationsMade from sturdy materials to deliver exceptional strength
      $234.08
    • (0 reviews)
      # sp83109
      Steel Harmonic Balancer Flange Hub by PowerBond®. 1 Piece. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal for your ultimate satisfaction.
      Engineered to absorb and reduce harmonic vibrationsMade from sturdy materials to deliver exceptional strength
      $81.07 - $95.46
    • (0 reviews)
      # sp83110
      Street Nodular Iron Performance Harmonic Balancer by PowerBond®. Street series product line brings bonded balancer technology within the budget of every performance street engine builder. PowerBond street balancers are also perfect...
      Engineered to absorb and reduce harmonic vibrationsMade from sturdy materials to deliver exceptional strength
      $105.74 - $179.00
    • (0 reviews)
      # sp33347
      All Steel SFI Race Harmonic Damper by Pro-Race®. The PRO/RACE "ALL STEEL" Harmonic Dampers are designed and manufactured for racing and high performance street applications and are available for a wide range of engines. The...
      High quality at an affordable priceExpertly made from premium materials
      $261.54 - $485.33
    • (0 reviews)
      # sp33349
      Pro Sport SFI Harmonic Damper by Pro-Race®. Specialist Harmonic Damper manufacturer, PRO/RACE Performance Products, manufactures the PRO/SPORT line of SFI dampers! Harmonic Dampers play a vital role to ensure longevity of engines...
      High quality at an affordable priceExpertly made from premium materials
      $153.68 - $229.13
    • (0 reviews)
      # sp33352
      Pro Street Harmonic Damper by Pro-Race®. Nodular Iron, also referred to as ductile iron, is typically the material used for heavy duty or racing applications of cast iron products. It is approximately 30% stronger than gray iron....
      High quality at an affordable priceExpertly made from premium materials
      $80.35 - $127.06
    • (0 reviews)
      # sp33355
      Under Drive Damper by Pro-Race®. Accessory drive systems have been made more compact on Late Model V8 engines like the Ford 4.6L and the GM LS1 by machining serpentine belt grooves on the OD of the crankshaft damper. The...
      High quality at an affordable priceExpertly made from premium materials
      $185.74 - $273.21
    • (2 reviews)
      # sp3430
      Harmonic Balancer by Professional Products®. Designed utilizing the latest technology, this product by Professional Products features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle,...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $11.72 - $261.07
    • (0 reviews)
      # sp3443
      Harmonic Balancer Spacer by Professional Products®. Designed utilizing the latest technology, this product by Professional Products features premium quality and will perform better than advertised. Perfect for your vehicle and...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $21.97 - $26.16
    • (0 reviews)
      # sp21822
      Harmonic Balancer by Rollmaster®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $190.81
    • (0 reviews)
      # sp12205
      Damper by SCAT®. Scat Dampers (also known as harmonic balancers, crankshaft dampers, vibration dampers) combine CNC-machining, innovative heat treatment, and easy-to-read timing marks to produce reliable, accurate components.
      Elastomer/bonded to prevent outer ring slippageRemovable counterweights
      $8.45 - $295.60
    • (0 reviews)
      # sp23903
      Performance Harmonic Balancer Bolt Kit by Spectre®. Rooted in racing, Spectre Performance designs and builds every product with the same goal in mind - the best performance in the market proven on the racetrack! All products are...
      High-tech engine parts for the most power and best performanceThe finest exterior and interior parts for superior appearance and functionality
      $6.02
    • (0 reviews)
      # sp29100
      Rattler Torsional Vibration Absorber by TCI®. Designed utilizing the latest technology, this product by TCI features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $315.54 - $405.28
    • (0 reviews)
      # sp29101
      Timing Pointer by TCI®. Designed utilizing the latest technology, this product by TCI features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or exceed...
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $51.23 - $86.37
    • (0 reviews)
      # sp92967
      Harmonic Balancer Locking Bolt Kit by Stage 8®. Package: 1 Point. Stage 8 manufacturers the World's Best Active Mechanical Locking systems. Stage 8 locking fastener solutions are fail-safe when used and installed as directed. They...
      High quality at an affordable priceExpertly made from premium materials
      $30.56 - $38.54
    • (0 reviews)
      # mpn2463661835
      Harmonic Balancer by ROUSH Performance®. Type: 25% Underdrive. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...
      Up to 4.9 Rear Wheel Horsepower IncreaseUp to 6.1 ft-lbs. Rear Wheel Torque Increase
      $290.64
    • (0 reviews)
      # mpn358731046
      Super Damper™ Harmonic Super Street Damper Aluminum Shell Assembly by ATI Performance®. Internal balance. 3 ring. ATI has designed a 5.5" damper for the Honda B-Series for high horsepower street use. This new design is a direct...
      High quality at an affordable priceExpertly made from premium materials
      $351.79
    • (0 reviews)
      # mpn358731053
      Super Damper™ Harmonic Supercharged Damper Aluminum Shell Assembly by ATI Performance®. Internal balance. 3 ring. The patented ATI Super Damper is the only crankshaft damper designed exclusively for high performance Chevy engines.
      Eliminates torsional crankshaft vibrationsExceeds SFI 18.1 specs
      $528.27
    • (0 reviews)
      # mpn458195870
      Drill Pin Kit by Fluidampr®. For use on high horsepower and high rpm Cummins engines to prevent fretting. Installation of new bolts is recommended. Designed utilizing the latest technology, this product by Fluidampr features...
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $56.43
    • (0 reviews)
      # mpn1720538
      Powerforce+Plus™ 1045 Steel Harmonic Balancer by Professional Products®. Diameter: 7.5". Material: 1045 Steel. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $223.07
    • (0 reviews)
      # mpn1692962
      Powerforce+Plus™ 1045 Steel Harmonic Balancer by Professional Products®. Diameter: 7.5". Material: 1045 Steel. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $239.06
    • (0 reviews)
      # mpn1720539
      Powerforce+Plus™ 1045 Steel Harmonic Balancer by Professional Products®. Diameter: 7.7". Material: 1045 Steel. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $260.36
    • (0 reviews)
      # mpn1724755
      Powerforce+Plus™ 1045 Steel Harmonic Balancer by Professional Products®. Diameter: 7.5". Material: 1045 Steel. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $189.44
    • (0 reviews)
      # mpn1724751
      Powerforce+Plus™ 1045 Steel Harmonic Balancer by Professional Products®. Diameter: 7.25". Material: 1045 Steel. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $177.02




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    Combustion drives pistons and connecting rods down, turning the crankshaft and beginning the process that ends up as vehicle motion. But at the same time that some pistons are on the power stroke, other pistons are being pushed up on the compression stroke and exhaust stroke, and others are being pulled down on the intake stroke. When you consider that all this takes place thousands of times per minute, it becomes easier to imagine the crankshaft twisting.

    The crank will only twist so far before it attempts to return to its original shape, but when it springs back, momentum twists it in the other direction. This twisting action creates torsional vibrations and resonance, which are more critical at certain engine speeds, and if not counteracted, can break the crankshaft. The harmonic balancer, also called vibration damper or torsional damper has a metal hub that mounts to the crankshaft snout, and an inertia ring surrounding its circumference, separated by rubber. The rubber allows the inertia ring to move and dampen crankshaft oscillations.

    Unfortunately, standard original equipment harmonic balancers are only designed to dampen torsional vibration at magnitudes and frequencies common to an engine in the original factory state of tune. Typical modifications made to an engine to increase horsepower output can increase vibration and/or change the RPMs where it is most critical, in which case the OE balancer will leave the engine virtually unprotected. In contrast, we offer performance harmonic balancers that will protect your heavily modified engine at all RPMs.

    Our performance harmonic balancers are available for most popular engines. They will eliminate the vibration that could destroy your expensive crankshaft and other components. We have balancers that are of traditional construction, viscous fluid balancers, and multi-piece balancers that are tunable and rebuildable. All have been tested to ensure safety at extreme RPMs, and meet or exceed SFI 18.1 specifications, which is a requirement for most racing organizations. Most also feature 360 degree timing marks, to facilitate engine tuning.

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    Harmonic Balancers Reviews

    Average rating:  5  5 - 9 reviews
    4.5 of 5
    Harmonic Balancer - Ford Freestyle
    Item was exactly the same as the one I removed. - good Ordered late on Monday night, and was delivered Fedex on the Thursday am. - good Price was the cheapest I could find online. - good The only comment I would make, is that the packaging could be better.
    JPosted by James (Cudahy, WI) / April 3, 2016
    2005 Ford Freestyle
    Was this review helpful for you? Yes
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