Harmonic Dampers / Balancers--Click On The Pictures For Product Information

Whether you need a stock replacement damper, a high performance street damper or an all out racing SFI-Spec damper, we have what you are looking for.

WHY YOUR ENGINE NEEDS A DAMPER: Each time the air/fuel mixture inside a cylinder is ignited, the combustion that occurs creates a torque spike that is applied to the crankshaft through the piston and rod. This torque spike is so severe that it not only turns the crankshaft, it actually twists the crankshaft ahead of its normal rotation and then the crankshaft rebounds. The forces generated by the mass of the rotating assembly also causes the crank to twist and rebound. This twisting action is known as torsional vibration. When these torque spikes and forces get into phase with the natural frequency, critical torsional harmonic vibrations occur and can be seriously destructive to the bearings and the crankshaft. Dampers are designed to control those destructive vibrations. IT's

A DAMPER NOT A BALANCER! A vibration damper can control harmful torsional harmonic vibrations. These dampers are erroneously called "harmonic balancers" and contrary to popular belief, do nothing to correct out of balance conditions in the crankshft assembly. Some dampers are designed with a counterweight for "externally balanced" engines that do not have enough room inside the crankcase for the proper amount of counterweight.


Professional Products 80004 90004 PowerForce harmonic damper Plus 8" Chevy 396 427 big block harmonic balancer
Professional Products 80005 90005 Professional Products PowerForce Plus harmonic damper Chevy 454 502 big block balancer
Professional Products 80010 90010 Professional Products PowerForce Plus harmonic damper Chevy 283 327 350 harmonic balancer 6" damper
Professional Products 80000 90000 Professional Products PowerForce Plus harmonic damper Chevy 350 327 283 harmonic balancer 6 3/4" damper
Professional Products

80004-90004

Chevy 396-427

8" Harmonic Damper

Professional Products

80005-90005

Chevy 454-502

8" Harmonic Damper

Professional Products

80010-80011

6" Harmonic Damper

Chevy Small Block

Professional Products

80000 90000

6 3/4" Harmonic Damper

Chevy 283-327-350

Professional Products 80002 90002 PowerForce Plus harmonic damper Chevy 283 327 350  harmonic balancer 8" damper
Professional Products 80001 90001 Professional Products PowerForce Plus harmonic damper  6 3/4"  Chevy 400 harmonic balancer
Professional Products 80003 90003 Professional Products PowerForce Plus harmonic balancer 8" Chevy 383 400 harmonic balancer
Professional Products 80030 90030 PowerForce Plus LT1 harmonic damper LT1 harmonic balancer
Professional Products

80002-90002

8" Harmonic Damper

Chevy 283-327-350

Professional Products

80001-90001

6 3/4" Harmonic Damper

Chevy 400

Professional Products

80003-90003

Harmonic Damper Balancer

Chevy 383-400

Professional Products

80030-90030

7 1/2" Harmonic Damper

Chevy LT1

Professional Products 80032 90032 Professional Products Powerforce harmonic damper LS1 harmonic damper balancer SFI Spec
Professional Products 80033 90033 PowerForce harmonic damper 1997-2007 Chevrolet Corvette LS1 LS2 LS6 harmonic damper LS1 LS2 LS6 harmonic balancer
Fluidampr 620101 Fluidampr 6 1/4" harmonic damper Chevy small block harmonic damper
Professional Products 80020 90020 PowerForce harmonic damper Pontiac V8 harmonic damper balancer
Professional Products

80032-90032

7 1/2" Harmonic Damper

1997-2002 Camaro Firebird LS1

Professional Products

80033-90033

7 1/2" Harmonic Damper

1997-2007 Corvette

LS1-LS2-LS6 Engine

Fluiddampr 620101

Chevy Small Block

6 1/4" Harmonic Damper

Professional Products

80020-90020

6.9" Harmonic Damper

Pontiac V8

Professional Products 80022 90022 PowerForce Plus harmonic damper Oldsmobile 350 400 455 harmonic damper balancer
Professional Products 80012 90012 PowerForce Plus harmonic damper 318 340 360 Magnum harmonic damper balancer
Professional Products 80013 90013 PowerForce Plus harmonic damper 383 400 413 426 440 harmonic damper balancer
Professional Products 80011 90011 PowerForce Plus harmonic damper 2005-2009 Ford 4.6L harmonic damper balancer
Professional Products

80022-90022

6 1/2" Harmonic Damper

Oldsmobile V8

Professional Products

80012-90012

7 1/4" Harmonic Damper

Chrysler 318-340-360

Professional Products

80013-90013

7 1/4" Harmonic Damper

Chrysler 440-426-413-400

Chrysler 383-361-351

Professional Products

80011-90011

Harmonic Damper

2005-2009 Ford 4.6L

Professional Products 80009 90009 PowerForce Plus harmonic damper Ford FE 427 428 390 harmonic damper balancer
Professional Products 80008 90008 PowerForce Plus harmonic damper Ford 429 460 hamonic damper balancer
Professional Products 80007 90007 PowerForce Plus Harmonic Damper 1981-1995 Ford 5.0L 302 351W harmonic damper balancer
Professional Products 80006 90006 PowerForce Plus harmonic damper Ford 289 302 351W harmonic damper balancer
Professional Products

80009-90009

7 1/2" Harmonic Damper

Ford FE 427-428-390

Professional Products

80008-90008

6.7" Harmonic Damper

Ford 429-460

Professional Products

80007-90007

6.4" Harmonic Damper

1981-1995 Ford 5.0L-302-351W

Professional Products

80006-90006

6.4" Harmonic Damper

1963-1980 Ford 289-302-351W

Professional Products 80045 80046 Powerforce harmonic damper Ford small block
Ford small block light weight SFI spec harmonic damper Professional Products 90045 90046
Moroso 61744 Moroso harmonic damper balancer installation tool
Harmonic Damper Balancer Timing Tape
Professional Products

80046-80045

81008-81006

6.4" Harmonic Damper

1963-1980 Ford Small Block

Professional Products

90046-90045

81008-81006

1963-1995 Ford Small Block

Mor61744

Harmonic Damper Balancer

Installation Tool

Harmonic Damper

Harmonic Balancer

Timing Tape


PayPal Acceptance Mark




We welcome CANADIAN customers! For ordering information, click on "Orders To Canada" at the top left side of this page.

We will not ship to freight forwarding - expediting companies.

PAYMENT METHODS: PayPal, Visa, Mastercard, Discover, American Express, money orders.

ecommerce provided by Yahoo! Small Business