{"product_id":"procharger-12-rib-offset-drive-pulley","title":"ProCharger 12-Rib Offset Drive Pulley","description":"\u003ch2\u003eProCharger 12-Rib Offset Drive Pulley\u003c\/h2\u003e\u003cp\u003eGenuine ProCharger offset serpentine drive pulley for compatible ProCharger supercharger drives. Select the required pulley diameter above; each diameter is tied to its exact ProCharger part number for clean ordering and fulfillment.\u003c\/p\u003e\u003ch3\u003eProduct Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e12-rib serpentine profile\u003c\/li\u003e\n\u003cli\u003eOffset configuration\u003c\/li\u003e\n\u003cli\u003eMachined supercharger drive pulley\u003c\/li\u003e\n\u003cli\u003eDiameter-specific ProCharger SKU\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eChoose the Correct Diameter\u003c\/h3\u003e\u003cp\u003ePulley diameter changes supercharger speed and boost. Verify your crank-pulley diameter, head-unit step-up ratio, target boost, maximum engine RPM and ProCharger's published impeller-speed limit before ordering. Also confirm that this offset pulley geometry matches your bracket and belt alignment. Contact SMG Speed if you need help calculating a safe combination.\u003c\/p\u003e","brand":"ProCharger","offers":[{"title":"3.70 in","offer_id":55078260441407,"sku":"DP370I-12SC","price":155.0,"currency_code":"USD","in_stock":true},{"title":"3.85 in","offer_id":55078260474175,"sku":"DP385I-12SC","price":155.0,"currency_code":"USD","in_stock":true},{"title":"4.00 in","offer_id":55078260506943,"sku":"DP400I-12SC","price":155.0,"currency_code":"USD","in_stock":true},{"title":"4.13 in","offer_id":55078260539711,"sku":"DP413I-12SC","price":155.0,"currency_code":"USD","in_stock":true},{"title":"4.25 in","offer_id":55078260572479,"sku":"DP425I-12SC","price":155.0,"currency_code":"USD","in_stock":true},{"title":"4.38 in","offer_id":55078260605247,"sku":"DP438I-12SC","price":155.0,"currency_code":"USD","in_stock":true},{"title":"4.50 in","offer_id":55078260638015,"sku":"DP450I-12SC","price":155.0,"currency_code":"USD","in_stock":true},{"title":"4.75 in","offer_id":55078260670783,"sku":"DP475I-12SC","price":155.0,"currency_code":"USD","in_stock":true},{"title":"5.25 in","offer_id":55078260703551,"sku":"DP525I-12SC","price":155.0,"currency_code":"USD","in_stock":true},{"title":"5.50 in","offer_id":55078260736319,"sku":"DP550I-12SC","price":155.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0760\/2041\/6831\/files\/procharger-12sc-drive-pulley.jpg?v=1786197968","url":"https:\/\/smgspeed.com\/products\/procharger-12-rib-offset-drive-pulley","provider":"SMGspeed","version":"1.0","type":"link"}