{"product_id":"jackal-motorsports-ultra-grip-57mm-press-on-supercharger-pulley-audi-3-0t-gen-1","title":"Jackal Motorsports Ultra Grip 57mm Press-On Supercharger Pulley, Audi 3.0T Gen 1","description":"\u003cp\u003eA stainless steel 57mm press-on upper pulley for Gen 1 EA837 Audi 3.0T supercharged engines, from Jackal Motorsports. The smaller upper pulley spins the supercharger faster for more boost, and supports most Stage 2 software setups with great drivability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUltra Grip etched belt surface\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMost upper pulleys have a smooth belt surface, which is where slip starts once boost and RPM climb. Jackal's Ultra Grip pulley uses a rough-etched surface - the same idea as their lower crank pulleys - so the belt holds on under heavy load and at high RPM. The result is steadier boost and better reliability on a harder-working 3.0T.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGoing Stage 2+\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCombine this upper with a Jackal lower crank pulley for a full dual pulley setup:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e187mm lower + 57mm upper\u003c\/li\u003e\n\u003cli\u003e190mm lower + 57mm upper\u003c\/li\u003e\n\u003cli\u003e192mm lower + 57mm upper\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRecommended belt sizes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e57mm upper only: 7PK1270\u003c\/li\u003e\n\u003cli\u003e187mm \/ 57mm: 7PK1300 or 7PK1310\u003c\/li\u003e\n\u003cli\u003e190mm \/ 57mm: 7PK1310\u003c\/li\u003e\n\u003cli\u003e192mm \/ 57mm: 7PK1310 or 7PK1320\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eGen 1 EA837 3.0T supercharged engines using the press-on style upper pulley. Not for CREC engines, which use a bolt-on pulley. Check your vehicle before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation note\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis is a press-on pulley. It must be heated to 450°F for 45 minutes and installed directly onto the supercharger straight from the heat source. Professional installation is recommended.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTuning required\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eChanging pulley size changes boost, so your ECU calibration must be set up for your pulley combination. Pair it with a Jackal Motorsports tune - available here at GAS.\u003c\/p\u003e","brand":"Jackal Motorsports","offers":[{"title":"Default Title","offer_id":67949404160199,"sku":null,"price":108.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0088\/3969\/2384\/files\/190B60A1-0D08-490F-8587-F2A0DA67B277.jpg?v=1792333747","url":"https:\/\/garageautosports.com\/en-uk\/products\/jackal-motorsports-ultra-grip-57mm-press-on-supercharger-pulley-audi-3-0t-gen-1","provider":"Garage Auto Sports","version":"1.0","type":"link"}