King CR4042XP Race pMaxBlack Tri-Metal Rod Bearing Set for BMW M40/M42/M43/M44

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Product Specification:

SKU:KINGCR4042XP

MPN: CR4042XP

UPC: 611500542565

Weight: 0.4 lb

Inventory: 2

Type: Bearings

Engine Fitment

BMW M40, M42, M43, M44 engines (1.6 L, 1.8 L, 1.9 L inline-4) - stock or performance-built crank applications

Features

pMaxBlack™ tri-metal bearing material - hardened overlay engineered for high load, high RPM, and racing use
Enhanced load capacity - rated for up to 10,200 PSI, suitable for high-stress conditions such as performance, racing, or turbocharged engines
"Bull's Eye" shell matching - ultra-tight wall-thickness tolerances, ensuring consistent oil clearance shell-to-shell
Increased bearing height - improves bearing-to-crank contact area, enhancing durability and reducing bearing spin under load
Optimized oil delivery - designed eccentricity and oil-groove geometry to improve hydrodynamic lubrication under high RPM / load
Narrowed shell design - accommodates large-radius crank journals and performance builds with minimal clearance issues
Fully matched set (4 connecting-rod bolts) - precision-matched for balanced performance across all cylinders
Available in multiple sizes/oversizes (STD, STD-X, +0.25 mm, +0.5 mm, etc.) to match crankshaft or block machining specifications

Specifications

Bearing type: Connecting-rod bearing (rod journals) - set of 4 pairs
Material: Tri-metal lead-bronze backing + pMaxBlack ™ hardened overlay
Rated load capacity: up to ~10,200 PSI (as per manufacturer race bearing spec)
Matching tolerance: Very tight (shell-to-shell tolerance ~0.0001") for consistent oil clearance
Available sizes: Standard, Standard + oversize (e.g. +0.25 mm, +0.5 mm), to match crank journal or housing re-bore as needed
Set quantity: 4 rod-bearing pairs (8 shells total) - sufficient for inline-4 engines with 4 connecting rods

Included Components

4x connecting-rod bearing pairs (upper & lower shells)

Product Description

The King CR4042XP rod bearing set is a high-performance, race-spec upgrade bearing engineered for BMW M40/M42/M43/M44 engines - commonly 1.6 L, 1.8 L, and 1.9 L inline-4 engines. Built using King's pMaxBlack™ tri-metal overlay, these bearings offer significantly higher load capacity and durability compared to standard OEM bearings - making them ideal for high-RPM, high-load, or forced-induction builds. Whether you're building a street-tuned, track-ready, or turbocharged M40-series engine, CR4042XP gives you a robust foundation for reliability under stress.

Precision-matched shells ensure consistent oil clearance and bearing-to-crank contact across all rods, reducing risk of uneven wear or bearing failure under high load or RPM. The bearing geometry and optimized oiling design promote proper hydrodynamic lubrication - critical in aggressive builds where engine demands exceed stock tolerances. Available in multiple sizes including oversize variants, this set accommodates stock and machined crank/housing dimensions - giving flexibility during rebuilds or performance modifications. CR4042XP is an excellent choice for anyone seeking a reliable, race-ready bearing solution for BMW M40/M42/M43/M44 engines.