ACL Race Main Bearings Undersized -.010in

2002-2014 Subaru WRX / 2004+ STI


SKU: 5M8309H-.25We price match!

In Stock

Ships today if ordered in
1 hrs 3 mins


  • Main bearings location
  • .010" Undersized 
  • Great option for those rebuilding that EJ to make more power
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ACL Race Main Bearings Undersized -.010in


  • Main bearings
  • .010" 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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