MAIN BEARING SET, NISSAN SKYLINE, RB26DETT (ACL RACE SERIES) 7M2428HX-STD


MAIN BEARING SET, NISSAN SKYLINE, RB26DETT (ACL RACE SERIES) 7M2428HX-STD - NZ Air Filter

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ACL Race Series Extra Clearance Main Bearing Set (STD +0.025mm), Nissan RB26DETT — 7M2428HX-STD

Enhanced oil film protection and heavy-duty load capacity for high-boost Nissan Skyline GT-R builds. When pushing your legendary Nissan RB26DETT engine with high turbo boost, aggressive mapping, or sustained high-RPM track use, standard bearing clearances can restrict optimal oil flow. The ACL Race Series HX-Type Main Bearing Set (7M2428HX-STD) features an additional 0.025mm (0.001") of oil clearance on standard journals, ensuring superior hydrodynamic lubrication under extreme motorsport conditions.

Why Choose ACL "HX" Extra Clearance Bearings?

Engineered specifically for high-performance modified and racing Nissan 6-cylinder powerplants, the HX range delivers critical advantages:

  • Extra Oil Clearance (+0.025mm / 0.001"): Increases bearing oil flow to mitigate heat buildup and prevent metal-to-metal contact under heavy boost and high loads.
  • High-Strength Overlay Plate: Reduced overlay thickness paired with enhanced fatigue resistance for durability.
  • Hardened Steel Backs: Provides maximum support for the bearing lining and maintains tight housing retention under extreme cylinder pressures.
  • Eliminated Flash Plating: Unplated bearing backs improve thermal heat transfer directly into the engine block housing.

Vehicle & Engine Applications

Designed for standard journals requiring extra oil clearance on Nissan performance engines:

  • Nissan RB26DETT (2.6L Twin-Turbo Inline-6): R32, R33, R34 Skyline GT-R
  • Compatible Hybrid Builds: RB26/30 stroker and specialized race configurations utilizing standard main tunnels with extra clearance requirements

Key Specifications

  • Part Number: 7M2428HX-STD
  • Size / Clearance: Standard (STD) with +0.025mm (0.001") extra oil clearance
  • Bearing Type: Main Bearing Set (HX Extra Clearance Series)
  • Material: High-performance Tri-metal construction

Kit Contents

  • 1x Complete Engine Set of Main Bearings (Standard Size with Extra Oil Clearance)

Building your Nissan RB engine? Drop our team a message if you need help verifying clearances or finding matching conrod bearings for your build.