{"product_id":"crankshaft-186","title":"Crankshaft","description":"The Tomioka Racing final gear drive is a performance-oriented gear set that modifies the final drive ratio of your Subaru BRZ or Scion FR-S to 4.68. By raising the ratio above the factory gearing, this component increases wheel torque across the entire RPM range, providing a significant performance upgrade for those maintaining a naturally aspirated FA20 engine setup.\n\nConstructed from special alloy steel, these gear sets are heat-treated using a proprietary process to ensure durability under both daily street driving conditions and the higher shock loads associated with track use. The design utilizes 3D modeling CAD software and finite element analysis to optimize the tooth profile, which serves to enhance tooth strength while reducing friction and parasitic power loss.","brand":"Tomei","offers":[{"title":"Default Title","offer_id":52866438955320,"sku":"TR-TM2048","price":905.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687730232.webp?v=1787907966","url":"https:\/\/store.motormia.co\/products\/crankshaft-186","provider":"MOTORMIA","version":"1.0","type":"link"}