Fluidampr Harmonic Balancer | 2003-2006 Mitsubishi Evo 8/9 (610701)

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Internal Harmonic Balancer by Fluidampr

Sport Compact Engine performance upgrades increase the naturally occurring characteristics of harmful crankshaft torsional vibrations. By installing a Fluidampr viscous damper you will reduce wear on the main bearings and timing gear, achieve more accurate valvetrain operation and lower the risk of crank failure. Unlike rubber based dampers, Fluidampr automatically adapts to your modifications, then continuously self-tunes in real time to optimum damping at both peak levels and across a broad changing frequency range. As the engine revs up, torsional vibration suspends the inertia ring and reduces its weight felt on the crankshaft. Measured as rotating weight, this effect helps maintain quick revs while preserving optimum dampening. Must have for instant protection against turbo and NOS power surges. Features precision machined and computer balanced components. Never needs to be tuned or rebuilt. SFI Approved. Made 100% in the U.S.A. ISO Certified.


  • Steel housing
  • Black Zinc Chromate finish
  • Self-tunes in real time
  • SFI approved
  • ISO certified


  • Reduce wear on main bearings and timing gear
  • More accurate valvetrain operation
  • Lower risk of crank failure


  • Bore Diameter Min/Max: 1.590 / 1.592
  • Degree Marking Range: 1 timing mark
  • Material: Steel
  • Keyway: Dowel pin hole
  • Safety Rating: SFI 18.1
  • Engine Balance: Internal
  • Mounting Hardware Included: No
  • Degree Markings: Yes
  • Length: 1.779
  • WT. in lbs.(Rotating weight): 6.8 (4.5 Rwt)
  • O.D.: 6-1/8" (6.125)
  • Finish: Black Zinc


  • 2003-2006 Mitsubishi Lancer Evolution 8/9

What's In The Box?

  • 1 - Internal Harmonic Balancer

Installation Instructions


  • Fluidampr Limited Warranty

Customer Reviews

Based on 13 reviews
Great Balancer!

High quality! Don't let your oem fail. Go with one of these!

A good improvement

There is a more expensive option of this style product, but I believe this will be more than enough for every Evo owner that isn't going too crazy on their build. Thanks!!!

Quality Product

Excellent Customer service. Quick delivery.

Renaldo Thomas
Quality Product

Excellent customer service. Quality product.

Erick Irizarry
Evo 8 crank balancer

Direct fit no issues