ACL Race Main Bearings Undersized -.020in

2002-2014 Subaru WRX / 2004+ STI


SKU: 5M8309H-.50We price match!

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ACL Bearings are coveted by enthusiasts and professional engine builders on a worldwide scale. From high-horsepower builds, high-boosted builds, or factory builds, ACL has a bearing that will provide your engine with the reliability and protection to sustain many purposes. These particular bearings are the main journal bearings in the Race version and will come 0.20" undersized for your next rebuild. 
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ACL Race Main Bearings Undersized -.020in


  • Main bearings
  • .020" Undersized 
  • Made using softer metals 
  • Designed to allow a thin layer of oil lubricates the connection between the bearings and the crank allowing the crank to "float" to reduce wear


  •  Subaru main bearings are specific to either a #5 or #3 journal bearing position
  • Journal bearing position is not VIN or year specific, it must be known prior to purchase.

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