• ACL Race Series rod bearing set for BMW N54 N55 S55B30

Upgrade your rotating assembly with ACL Race Series tri-metal connecting rod bearings, engineered for high-RPM performance and forced-induction reliability. Features hardened steel backs for improved bearing retention, increased crush for better retention, reduced-thickness high-strength overlay plate for improved fatigue properties, and elimination of flash plating for better heat transfer.

Fits: BMW N54B30, N55B30, S55B30 (3.0L Inline-6)

  • Standard — stock, unworn rod journals
  • Standard HX — same size as standard, +0.001" extra clearance, for built engines running higher oil temps/RPM
  • 0.025mm Undersize — fine trim, minor rod journal cleanup
  • 0.25mm Undersize — first regrind step

⚠️ Before ordering an undersize set, confirm your connecting rods have been machined to the matching undersize spec — check clearances with Plastigauge before final assembly.

ACL

ACL Race Series Rod Bearing Set - BMW N54/N55/S55B30

SKU 6B1584H-STD
$170.00

Upgrade your rotating assembly with ACL Race Series tri-metal connecting rod bearings, engineered for high-RPM performance and forced-induction reliability. Features hardened steel backs for improved bearing retention, increased crush for better retention, reduced-thickness high-strength overlay plate for improved fatigue properties, and elimination of flash plating for better heat transfer.

Fits: BMW N54B30, N55B30, S55B30 (3.0L Inline-6)

  • Standard — stock, unworn rod journals
  • Standard HX — same size as standard, +0.001" extra clearance, for built engines running higher oil temps/RPM
  • 0.025mm Undersize — fine trim, minor rod journal cleanup
  • 0.25mm Undersize — first regrind step

⚠️ Before ordering an undersize set, confirm your connecting rods have been machined to the matching undersize spec — check clearances with Plastigauge before final assembly.
$170.00
Size:
ACL Race Series rod bearing set for BMW N54 N55 S55B30

∼ Workshop Approved ∼ Your Build Deserves Better ∼ Trusted by Mechanics & Explorers ∼ Workshop Approved ∼ Your Build Deserves Better ∼ Trusted by Mechanics & Explorers ∼ Workshop Approved ∼ Your Build Deserves Better ∼ Trusted by Mechanics & Explorers ∼ Workshop Approved ∼ Your Build Deserves Better ∼ Trusted by Mechanics & Explorers ∼ Workshop Approved ∼ Your Build Deserves Better ∼ Trusted by Mechanics & Explorers ∼ Workshop Approved ∼ Your Build Deserves Better ∼ Trusted by Mechanics & Explorers ∼ Workshop Approved ∼ Your Build Deserves Better ∼ Trusted by Mechanics & Explorers ∼ Workshop Approved ∼ Your Build Deserves Better ∼ Trusted by Mechanics & Explorers ∼ Workshop Approved ∼ Your Build Deserves Better ∼ Trusted by Mechanics & Explorers ∼ Workshop Approved ∼ Your Build Deserves Better ∼ Trusted by Mechanics & Explorers ∼ Workshop Approved ∼ Your Build Deserves Better ∼ Trusted by Mechanics & Explorers ∼ Workshop Approved ∼ Your Build Deserves Better ∼ Trusted by Mechanics & Explorers ∼ Workshop Approved ∼ Your Build Deserves Better ∼ Trusted by Mechanics & Explorers ∼ Workshop Approved ∼ Your Build Deserves Better ∼ Trusted by Mechanics & Explorers ∼ Workshop Approved ∼ Your Build Deserves Better ∼ Trusted by Mechanics & Explorers ∼ Workshop Approved ∼ Your Build Deserves Better ∼ Trusted by Mechanics & Explorers ∼ Workshop Approved ∼ Your Build Deserves Better ∼ Trusted by Mechanics & Explorers ∼ Workshop Approved ∼ Your Build Deserves Better ∼ Trusted by Mechanics & Explorers ∼ Workshop Approved ∼ Your Build Deserves Better ∼ Trusted by Mechanics & Explorers ∼ Workshop Approved ∼ Your Build Deserves Better ∼ Trusted by Mechanics & Explorers

Upgrade your rotating assembly with ACL Race Series tri-metal connecting rod bearings, engineered for high-RPM performance and forced-induction reliability. Features hardened steel backs for improved bearing retention, increased crush for better retention, reduced-thickness high-strength overlay plate for improved fatigue properties, and elimination of flash plating for better heat transfer.

Fits: BMW N54B30, N55B30, S55B30 (3.0L Inline-6)

  • Standard — stock, unworn rod journals
  • Standard HX — same size as standard, +0.001" extra clearance, for built engines running higher oil temps/RPM
  • 0.025mm Undersize — fine trim, minor rod journal cleanup
  • 0.25mm Undersize — first regrind step

⚠️ Before ordering an undersize set, confirm your connecting rods have been machined to the matching undersize spec — check clearances with Plastigauge before final assembly.

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Total price$923.98

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