A true weight savings that can be felt with every blip of the gas pedal. One of our best selling parts, many thousands installed on Subaru engines around the world. *Decreases Rotational Mass* The PERRIN Performance Crank Pulley weighs just 1.2 lbs, which is 4-pounds lighter than the stock OEM crank pulley. This reduction in weight from the crank shaft is equal to removing more than 100 lbs of vehicle weight! Throttle response, horsepower and torque are all increased with this easy to install part. *Design* Precision machined grooves, tightly sync with all OEM and aftermarket belts. *Construction* The PERRIN crank pulley is machined from 6061T6 billet aluminum, anodized black or red and laser etched for increased belt life and a precision fit. *Gates Micro-V Stretch Fit Belt* Gates stretch fit belts may look like standard V-ribbed belts but inside they are dramatically different. The secret is Gates new TwistLock Technology where the strength and flexibility of advanced polyamide tensile cord is surrounded by a specially formulated adhesive that literally locks on to the cord- allowing the cord to elongate and stretch but never lose tension. PartNumber : paPSP-ENG-101RD Description : Lightened Crank Pulley Color : Red Weight : 1.2lb 2013-2016 Scion FR-S Base H4.1998cc Engine Components::Pulleys - Crank, Underdrive 2013-2017 Subaru BRZ Limited H4.1998cc Engine Components::Pulleys - Crank, Underdrive 2013-2017 Subaru BRZ Premium H4.1998cc Engine Components::Pulleys - Crank, Underdrive 2015 Subaru BRZ Series.Blue H4.1998cc Engine Components::Pulleys - Crank, Underdrive 2016 Subaru BRZ Series.HyperBlue H4.1998cc Engine Components::Pulleys - Crank, Underdrive 2012-2013 Subaru Impreza Base H4.1995cc Engine Components::Pulleys - Crank, Underdrive 2012-2013 Subaru Impreza Limited H4.1995cc Engine Components::Pulleys - Crank, Underdrive 2012-2013 Subaru Impreza Premium H4.1995cc Engine Components::Pulleys - Crank, Underdrive 2012-2013 Subaru Impreza Sport Limited H4.1995cc Engine Components::Pulleys - Crank, Underdrive 2012-2013 Subaru Impreza Sport Premium H4.1995cc Engine Components::Pulleys - Crank, Underdrive 2012-2013 Subaru Impreza WRX H4.2458cc Engine Components::Pulleys - Crank, Underdrive 2012-2013 Subaru Impreza WRX Limited H4.2458cc Engine Components::Pulleys - Crank, Underdrive 2012-2013 Subaru Impreza WRX Premium H4.2458cc Engine Components::Pulleys - Crank, Underdrive 2012-2013 Subaru Impreza WRX STI H4.2458cc Engine Components::Pulleys - Crank, Underdrive 2012-2013 Subaru Impreza WRX STI Limited H4.2458cc Engine Components::Pulleys - Crank, Underdrive 2017 Toyota 86 Base H4.1998cc Engine Components::Pulleys - Crank, Underdrive