King Racing - BMW S65 GPC Coated Rod Bearings (STD) - E9X M3

Product Details

The S65B40 and S85B50 engines are masterpieces of engineering, but they are notoriously haunted by one fatal flaw: tight factory rod bearing clearances.

King Engine Bearing’s Coated & Graded GPC bearings are the definitive answer to this ticking time bomb, providing a level of precision and durability that standard off-the-shelf bearings simply cannot match.

Precision Grading for Perfect Clearances

In engines as sensitive as the BMW V8 and V10, "close enough" isn't good enough. Every King shell in these kits is individually measured and precision-graded. We then match and package them to ensure perfectly uniform oil clearance across all journals. This gives engine builders total control, ensuring consistent lubrication and peace of mind during high-RPM operation.

The GPC Silver-Based Advantage

At the heart of the GPC Series is King’s specialized silver-based tri-metal structure. While traditional race materials often peak at a load capacity of 11,000 PSI, King GPC bearings are engineered to handle a massive 17,000 PSI. This above 50% increase makes them the ideal choice for sustained high-heat cycles and the extreme inertial forces found at 8,250+ RPM or higher.

Advanced Nano-Polymer Coating

To further fortify your bottom end, these bearings feature a proprietary, factory-applied polymer coating. Reinforced with ceramic nano-wear additives, this non-sacrificial layer provides:

• Cold Start Protection: Vital for the S65/S85, where oil flow is delayed during initial startup.
• Scuff Resistance: Massive protection against metal-to-metal contact during momentary oil starvation.
• Zero-Tolerance Impact: Unlike thick aftermarket coatings, this 10-micron layer provides protection without tightening your clearances, preserving the benefits of the graded system.

Product Features

• Precision-Graded & Matched: Individually sorted shells for industry-leading clearance consistency
• 17,000 PSI Load Capacity: Outperforms standard race bearings (11,000 PSI) by over 50%
• Silver-Based Tri-Metal Construction: Engineered specifically for extreme loads and high-revving stability
• 10-Micron Polymer Coating: Infused with solid lubricants and ceramic additives for superior seizure resistance
• Failsafe Engineering: Designed to protect the crankshaft even in the event of brief oil starvation
• True Standard Clearance: Achieves the precise oil gap required for 10w60 oils that "standard" bearings can't hit

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