{"product_id":"custom-crank-underdrive-pulley","title":"Custom Crank Underdrive Pulley","description":"The 3SX Custom Crank Underdrive Pulley is engineered to enhance the performance of 1992-1999 DOHC Mitsubishi 3000GT and Dodge Stealth models. Constructed from CNC 6061 machined billet aluminum, this pulley weighs a mere 1.5 pounds, a substantial reduction from the factory steel pulley's 6.7 pounds. This reduction in rotational mass directly translates to increased horsepower delivered to the wheels, as less energy is consumed by overcoming the inertia of the stock component.\n\nBeyond weight savings, the underdrive design intentionally slows the operational speed of accessories like the alternator and air conditioning compressor. This reduction in accessory drag further contributes to freeing up engine power. However, this function also means a reduced charging capacity from the alternator. For vehicles equipped with demanding aftermarket audio systems (e.g., external amplifiers), the 3SX Stock Sized Pulley is advised as an alternative to avoid potential electrical system strain.\n\nThis pulley is specifically designed for the 1992-1999 DOHC 3000GT\/Stealth. It will not fit the 1991 DOHC models, which utilize a V-belt for power steering, nor will it fit SOHC models. It is also recommended to replace the crank pulley center bolt if it shows signs of rounding or splitting, ensuring proper and secure installation.\n\nHorsepower gains from lightweight aluminum pulleys like this are estimated to be between 10-15 HP, with the underdrive version offering a minimal, but present, difference compared to a stock-sized lightweight pulley.","brand":"3sx","offers":[{"title":"Default Title","offer_id":52686704509240,"sku":"3SX-CUSTOM-CRANK-PULLEY-UNDERDRIVE","price":103.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/660670609.jpg?v=1784876047","url":"https:\/\/store.motormia.co\/products\/custom-crank-underdrive-pulley","provider":"MOTORMIA","version":"1.0","type":"link"}