Fluidampr Steel Internally Balanced Damper Subaru WRX / BRZ / Scion FR-S / Forester XT / XV Crosstrek / Legacy

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Fluidampr Subaru BRZ/Scion FR-S/Toyota 86 FA20/4U-GSE 2014+ Steel Internally Balanced Damper


This SFI 18.1 certified performance crankshaft damper is a direct bolt-on upgrade for the existing OEM elastomer style harmonic balancer and requires no installation modifications.

Fluidampr Performance Damper Benefits

A Fluidampr performance damper creates a foundation for improved durability and performance by providing long lasting, broad range protection against destructive crankshaft torsional vibration commonly found with engine modifications. It is recommended to install a Fluidampr performance damper early in an engine build for optimum benefits. Ideal for street enthusiasts to professional race teams who desire a maintenance free crankshaft damper that will remain compatible as upgrades are made as well as last the life of the engine without costly and time consuming rebuilds or replacements.

Design and Development

The design and development of this Fluidampr performance damper followed the same rigorous ISO 9001:2008 certified standard found in OEM supplied viscous dampers to the aviation and defense industries by Fluidampr’s parent company, Vibratech TVD.

Starting with engineering research data, a design was constructed with computer simulation software and put through a series of proprietary computer simulated tests, including Finite Element Analysis (FEA) to measure damper resonance frequency and structural limits. The diagram below shows the actual FEA analysis at 12,500rpm required by SFI 18.1 spec. It is nearly four times the safety requirement needed for professional racing. From computer modeling the damper is printed on a 3D additive printer and sent to select industry leading engine builders for fitment verification. Once design specifications and fitment were verified, functional prototypes were developed and product testing began.

Fluidampr Performance Damper Design Features

The Fluidampr performance damper for 2013-later FRS/BRZ/GT86 and 2015 Subaru WRX applications incorporates a six-rib drive pulley and is precision CNC machined from high grade steel. Both the outer housing and internal inertia ring is high-speed computer zero balanced from the factory. The pre-drilled 3 bolt hole pattern (1.810 center – 5/16-18 UNF 2.75) on the outer housing accepts an ARE dry sump drive or other accessories with the use of a custom mounting bracket. The damper is finished in a corrosion resistant black zinc chromate finish and includes an engraved timing mark. Made in the USA.

Application Specifications

Housing: Steel
Finish: Black Zinc
O.D.: 5-7/8”
Weight: 5.8 lbs
Rotating Weight: 3.8 lbs
Bore: 0.787”
Length: 1.62”
Safety: SFI Certified
Accessory Bolt Pattern: 1.810 center – 5/16-18 UNF 2.75

Application List

FA20 Engines:

2013-2017 Subaru BRZ
2013-2016 Scion FR-S
2013-2017 Toyota GT86
2015+ Subaru WRX 2.0L
2015+ Subaru Forester 2.0XT Premium and Touring Only

FB Engines:

2011+ Subaru Forester
2012+ Subaru Legacy
2012+ Subaru XV Crosstrek

SKU: 571101

Vendor: Fluidampr

Additional information

SKU 571101
Carb Compliance Yes
Prop 65 Yes
EPA Approved N/A
Weight 6.6 lbs
Dimensions 10.4 × 10.2 × 4.6 in