It might be hard to imagine how reducing the mass of a pulley makes a car go faster, but accelerating a heavy factory pulley from say 3000-7000 RPM in a second or two saps a measurable amount of torque. GFB Lightweight Pulleys reduce inertia by up to 85 percent, so most of the torque that used to accelerate the pulley can now be applied to the wheels.
BRZ/86/FR-S lightweight non-underdrive pulley kit (crank, alternator and water pump pulleys).
Subaru BRZ/86/FR-S
Product Features:
Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Epa: N/A
Carb Acknowledgement Required: f
Fits According to Mfg but not guarunteed.
2013ScionFR-SBase
2013SubaruBRZLimited
2013SubaruBRZPremium
2014ScionFR-SBase
2014SubaruBRZLimited
2014SubaruBRZPremium
2015ScionFR-SBase
2015SubaruBRZLimited
2015SubaruBRZPremium
2015SubaruBRZSeries.Blue
2016ScionFR-SBase
2016SubaruBRZLimited
2016SubaruBRZPremium
2016SubaruBRZSeries.HyperBlue
2017SubaruBRZLimited
2017SubaruBRZPremium
2017Toyota86Base
2017Toyota86Special Edition