• Kolbenschmidt main bearing set for BMW N52 N53 N54 N55

Upgrade your bottom end with genuine Kolbenschmidt main bearings, a trusted OE-quality manufacturer used widely across BMW's N-series engine lineup. Built for reliable clearance and durability under daily driving and spirited use alike.

Fits: BMW N52B25, N52B30, N53B25, N53B30, N54B30, N55B30

  • Standard — stock, unworn crank journals
  • 0.25mm Undersize — first regrind step
  • 0.50mm Undersize — second regrind step

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

Kolbenschmidt

Kolbenschmidt Main Bearing Set - BMW N52/N53/N54/N55

SKU 77947600
$87.99

Upgrade your bottom end with genuine Kolbenschmidt main bearings, a trusted OE-quality manufacturer used widely across BMW's N-series engine lineup. Built for reliable clearance and durability under daily driving and spirited use alike.

Fits: BMW N52B25, N52B30, N53B25, N53B30, N54B30, N55B30

  • Standard — stock, unworn crank journals
  • 0.25mm Undersize — first regrind step
  • 0.50mm Undersize — second regrind step

⚠️ Before ordering an undersize set, confirm your crank has been machined to the matching undersize spec — check clearances with Plastigauge before final assembly.
$87.99
Size:
Kolbenschmidt main bearing set for BMW N52 N53 N54 N55

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Upgrade your bottom end with genuine Kolbenschmidt main bearings, a trusted OE-quality manufacturer used widely across BMW's N-series engine lineup. Built for reliable clearance and durability under daily driving and spirited use alike.

Fits: BMW N52B25, N52B30, N53B25, N53B30, N54B30, N55B30

  • Standard — stock, unworn crank journals
  • 0.25mm Undersize — first regrind step
  • 0.50mm Undersize — second regrind step

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

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Total price$804.98

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