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BRIAN CROWER Bearings ACL/King Race Series - Rods, Mains (Mitsubishi 4G63T - 2Gen W/1 Piece Main)

BRIAN CROWER Bearings ACL/King Race Series – Rods, Mains (Mitsubishi 4G63T – 2Gen W/1 Piece Main)

£247.46 Inc. VAT

SKU: BC4100 Categories: , , , Brand:

Description

Part Number: BC4100

Brian Crower ACL Race Series Bearing Set – Mitsubishi 4G63T (2nd Gen 1-Piece Main)

Maximize rotating assembly strength and thermal stability in high-boost Mitsubishi 4G63T engines with the Brian Crower BC4100 ACL Race Series bearing set.

Key Features

  • ☑ Premium ACL Race Series tri-metal construction engineered to handle elevated cylinder pressures and sustained high-RPM operation.
  • ☑ Standard OEM sizing for precise oil clearance and seamless installation without requiring line boring.
  • ☑ High-strength steel backing with copper-lead intermediate layer and lead-tin-copper overlay for supreme load capacity.
  • ☑ Extended groove design for optimized oil delivery to critical crankshaft journals.
  • ☑ Specifically matched by Brian Crower for Mitsubishi 4G63T 2nd Gen blocks utilizing a 1-piece main bearing cap.

Technical Specifications

Brand Brian Crower / ACL Race Series
Manufacturer Part Number BC4100
Engine Application Mitsubishi 4G63T (2nd Gen w/ 1-Piece Main Cap / 7-Bolt)
Rod Bearing Reference ACL #4B1185 / 4B1185HX (44.98 – 44.99mm Journal)
Main Bearing Reference ACL #5M1186 / 5M1186HX (56.98 – 57.00mm Journal)
Sizing Standard STD / OEM Standard Sizing
Material Construction Tri-Metal (Steel / Copper-Lead / Lead-Tin-Overlay)

What’s Included in the Box

  • 1 x Complete set of ACL Race Series main bearings (5 pairs)
  • 1 x Complete set of ACL Race Series connecting rod bearings (4 pairs)
  • Manufacturer packaging and detailed spec sheets

As an authorized stockist of genuine Brian Crower and ACL motorsport components, JP Racing supplies professional engine builders and track enthusiasts across the UK with verified high-performance hardware. Order your BC4100 bearing set today for express UK dispatch and expert technical advice from our dedicated team.

Frequently Asked Questions

The BC4100 bearing set is specifically tailored for 2nd Generation Mitsubishi 4G63T engines that feature a 1-piece main bearing cap layout (commonly found in late DSM 2G and Evolution IV-IX platforms with 7-bolt configurations). Ensure your block specs match prior to assembly.

ACL Race Series tri-metal bearings feature a hardened steel backing, a copper-lead intermediate layer, and a high-durability electroplated overlay. This construction withstands extreme cylinder pressures, higher RPM flex, and elevated oil temperatures far better than standard bi-metal aluminum bearings.

No, the BC4100 kit is manufactured in standard OEM dimensions (STD). Provided your crankshaft journals and block line bore are within original factory tolerances, these bearings drop in directly. Always measure oil clearances using precision micrometers or Plastigage during mock-up.

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