{"product_id":"2014-go-fast-bits-underdrive-pulley-kit-subaru-wrx-2008-2014-sti-2008-2021-gfb2014","title":"Go Fast Bits Underdrive Pulley Kit Subaru WRX 2008-2014 \/ STI 2008-2021","description":"\u003cp\u003eThis GFB Pulley Kit comes with the crank, alternator and power steering pulleys as well as the belt needed for install. Having large heavy pulleys spinning takes away power that is better spent moving the car. This kit takes care of that by replacing the crank pulley with a lighter version that underdrives the power steering and alternator yet leaves the A\/C compressor spinning at normal speeds.\u003cbr\u003e\u003cbr\u003e Part #: 2014\u003cbr\u003e\u003cbr\u003e Stock Crank Pulley : 5.51lb (STI) \/ 4.63lb (WRX) \u003cbr\u003eGFB Crank Pulley : .86lb \u003cbr\u003e\u003cbr\u003e Stock Power Steering Pulley : .81lb \u003cbr\u003eGFB Power Steering Pulley : .37lb \u003cbr\u003e\u003cbr\u003e Stock Alternator Pulley : .36lb \u003cbr\u003eGFB Alternator Pulley : .14lb \u003cbr\u003e\u003cbr\u003e Total Mass for GFB Pulley Kit : 1.38lb \u003cbr\u003eTotal Mass for Stock Pulleys : 6.69lb (STI) \/ 5.81lb (WRX) \u003cbr\u003eMass Savings : 5.31lb (STI) \/ 4.43lb (WRX) \u003cbr\u003e\u003cbr\u003eAlternator Underdrive : 16.5% \u003cbr\u003ePower Steering Underdrive : 18% \u003cbr\u003eA\/C Underdrive : None\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003e\u003cu\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/u\u003e\u003c\/strong\u003e\u003c\/p\u003e\n","brand":"Go Fast Bits","offers":[{"title":"Default Title","offer_id":51572937490754,"sku":"2014","price":365.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9294\/3170\/files\/Go-Fast-Bits-Underdrive-Pulley-Kit-Subaru-WRX-2008-2014-STI-2008-2021.jpg?v=1764072235","url":"https:\/\/autospecdesign.com\/products\/2014-go-fast-bits-underdrive-pulley-kit-subaru-wrx-2008-2014-sti-2008-2021-gfb2014","provider":"AutoSpec Design","version":"1.0","type":"link"}