ATI Damper 7.074in Aluminum 6 Groove 10% Underdrive (20132019 Scion / Subaru / Toyota FA20 2.0L Engine) ATI918482L
7.074in Aluminum 10% Underdrive Super Damper for 20132019 Scion FR-S, Subaru BRZ & Toyota 86 (FA20 2.0L)
The ATI 7.074-inch Aluminum Super Damper (part ATI918482L) is precision-engineered for the FA20 2.0L engine found in the 20132019 Scion FR-S, Subaru BRZ, and Toyota 86. Featuring a 10% underdrive pulley and 6-groove design, this lightweight aluminum damper reduces parasitic drag, freeing up horsepower and improving throttle response. Perfect for street performance and track enthusiasts, the ATI918482L offers race-proven vibration control and reliability in a compact, SFI 18.1-certified design.
Performance Highlights
- 7.074-inch outer diameter ensures precise harmonic control and stability
- 10% underdrive pulley reduces accessory drag for measurable horsepower gains
- 6-groove configuration maintains full accessory compatibility
- Lightweight aluminum construction minimizes rotating mass and improves engine response
- Ideal for street and track applications requiring balance and smooth operation
- SFI 18.1 certified for sanctioned motorsport safety compliance
- Fully rebuildable for long-term, repeatable performance
Quick Specs
- Outer Diameter: 7.074 inches
- Material: Aluminum
- Pulley Type: 6 Groove
- Drive Ratio: 10% Underdrive
- Design: 1-Piece Super Damper
- Certification: SFI 18.1
- Applications: 20132019 Scion FR-S / Subaru BRZ / Toyota 86 (FA20 2.0L)
- Part Number: ATI918482L
Why Choose ATIs 10% UD Super Damper for the FA20 Platform?
The ATI918482L Super Damper is a proven performance upgrade for FA20-powered vehicles. Its 10% underdrive design decreases load on accessories, improving acceleration and freeing up usable power without affecting reliability. The dampers precision-balanced aluminum construction ensures smoother operation, reduced vibration, and superior longevity compared to stock dampers making it a favorite among enthusiasts and tuners alike.
Frequently Asked Questions
What does 10% underdrive mean?
It means the pulley diameter is slightly smaller than stock, reducing accessory speed by about 10%, which decreases parasitic drag and increases power to the wheels.
Is it safe for daily driving?
Yes. The 10% UD ratio provides a noticeable performance benefit without negatively impacting charging or cooling systems during normal street use.
Is this damper compatible with stock belts and accessories?
Yes. The ATI918482L retains OEM belt alignment and accessory function, making it a true bolt-on upgrade.
Can it be rebuilt?
Yes. Like all ATI Super Dampers, this unit is fully rebuildable using ATI replacement components for long-term use.
Vehicle Fitment
- 2013 Scion FR-S 2.0L FA20
- 2014 Scion FR-S 2.0L FA20
- 2015 Scion FR-S 2.0L FA20
- 2016 Scion FR-S 2.0L FA20
- 2017 Toyota 86 2.0L FA20
- 2018 Toyota 86 2.0L FA20
- 2019 Toyota 86 2.0L FA20
- 2013 Subaru BRZ 2.0L FA20
- 2014 Subaru BRZ 2.0L FA20
- 2015 Subaru BRZ 2.0L FA20
- 2016 Subaru BRZ 2.0L FA20
- 2017 Subaru BRZ 2.0L FA20
- 2018 Subaru BRZ 2.0L FA20
- 2019 Subaru BRZ 2.0L FA20
Contact Beefcake Racing
Beefcake Racing supplies the complete line of ATI Super Dampers for import and domestic applications. For expert fitment support or to place an order, contact sales@beefcakeracing.com or call 1-855-827-7223. Our performance specialists will help you select the ideal damper for your FA20-powered FR-S, BRZ, or 86.
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
