{"product_id":"nst-k20-pulley-kit","title":"NST K20 Pulley Kit","description":"The NonStopTuning (NST) Honda Civic Si K20 Pulley Kit offers enhanced engine performance by reducing rotational mass and underdriving accessories. This 3-piece kit, constructed from 6061-T6 aircraft-grade aluminum with a hard anodized finish, is approximately 70-75% lighter than OEM pulleys. The kit includes a crank pulley (11 oz), an idler pulley (9.5 oz), and an alternator pulley (2.8 oz), all precision CNC machined and balanced for tight tolerances.\n\nThe kit features an overdrive alternator pulley, beneficial for those with high-demand stereo systems, ensuring adequate electrical output without draining the battery. A unique aspect of this kit is the inclusion of a resized idler pulley that replaces the OEM belt idler, allowing for the use of the stock Honda belt, though NST recommends a new belt for high-mileage customers.\n\nNST emphasizes the superior durability of their hard-anodized aluminum pulleys compared to cheaper bare aluminum or cast iron alternatives. Their crank pulleys also feature crucial elements like oil sleeves (when necessary) and proper timing marks, features often missing from competing products. The company has been producing performance pulleys since 2005, with ongoing research and development to expand their product line.","brand":"NonStopTuning","offers":[{"title":"Default Title","offer_id":52663158374712,"sku":"NST22015K","price":86.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687518841.jpg?v=1784324367","url":"https:\/\/store.motormia.co\/products\/nst-k20-pulley-kit","provider":"MOTORMIA","version":"1.0","type":"link"}