{"product_id":"underdrive-pulley-kit-s85-stre","title":"Dinan BMW M5\/M6 Underdrive Crankshaft Pulley Kit","description":"\u003cp\u003eDinan's lightweight billet aluminum crankshaft pulley underdrives each of the accessories by 13 percent, reducing parasitic drag on the engine for a 6 HP @ 8000 RPM and 4 lb-ft torque @ 8000 RPM gain on a stock vehicle. The Dinan underdrive pulley retains the factory harmonic crankshaft damper, eliminating vibration that might otherwise damage the crankshaft.\u003c\/p\u003e\n\u003cp\u003eThe kit includes all of the necessary mounting hardware, lightweight pulley, and shorter belts. This product is backed by our industry-leading 4 year\/50,000 mile warranty so you can rest assured that you are purchasing the best quality product for your BMW.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e13 Percent Underdrive - Billet Aluminum - E60\/E63\/E64\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul class=\"productpage_list\"\u003e\n\u003cli\u003eAll accessories are underdriven by 13% to decrease drag on the engine.\u003c\/li\u003e\n\u003cli\u003eLightweight billet aluminum crankshaft pulley, black anodized and engraved.\u003c\/li\u003e\n\u003cli\u003eIncludes mounting hardware and shorter belts.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dinan","offers":[{"title":"Default Title","offer_id":53417267527979,"sku":"D560-0001","price":483.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/3645\/4465\/files\/1_97da6167-96d7-4e59-9d77-3a55fe2a443b.png?v=1780044673","url":"https:\/\/www.burton-racing.com\/products\/underdrive-pulley-kit-s85-stre","provider":"Burton-Racing","version":"1.0","type":"link"}