King Engine Bearings MB7092XP STDX XP Series Tri-Metal Main Bearing Set for Nissan RB26DETT 24V

The King Engine Bearings MB7092XP STDX is a complete XP Series tri-metal main bearing set engineered for the Nissan RB26DETT 24-valve engine. Sized at STDX — standard diameter with an additional 0.001" of extra oil clearance — this set is purpose-built for high-performance and racing builds that demand greater bearing film thickness and improved lubrication under extreme load.

At the core of the XP series is King's proprietary pMax Black™ tri-metal construction. The intermediate layer uses a copper-based alloy with added tin, delivering a load capacity of 17,000 psi — the highest in the industry. The hardened performance overlay measures 0.0005" thick and resists surface fatigue under sustained high-load conditions. The result is a bearing that offers 15% to 30% greater load capacity than traditional race bearings, with enhanced fatigue resistance to match.

Key Features:

• pMax Black™ Tri-Metal Construction — Enhanced copper-lead intermediate layer with nickel barrier and SecureBond adhesion process for superior stability between layers
• SecureBond Adhesion — Proprietary process bonding the top and intermediate layers for maximum structural integrity at high RPM
• Bull's Eye Tolerance — Tightest wall tolerances in the industry; all shells matched to within 0.0001"
• STDX Sizing — Standard crankshaft diameter with 0.001" additional oil clearance for builders seeking a wider oil film
• Half-Groove Mains — Upper shells are 1/2 grooved to preserve full load capacity in the lower shell
• Narrowed Design — Mains are narrowed to clear large-radius crankshaft fillets common on forged aftermarket cranks
• Enlarged, Chamfered Oil Holes — Improves oil delivery and maintains film stability under load
• Medium Eccentricity — Optimizes load distribution and oil film formation across the bearing surface

Construction: Enhanced tri-metal copper-lead with nickel barrier and SecureBond adhesion. The 0.0005" metallurgically hardened overlay is engineered to withstand greater loads and resist surface fatigue in extended high-performance use.

Intended Applications: High-load, long-duration racing applications including circle track, off-road, and off-shore racing — any application using a forged steel aftermarket crankshaft and generating sustained high loads. Designed specifically for the Nissan RB26DETT 2568cc inline-6 DOHC 24-valve twin-turbocharged engine.

King Engine Bearings has been a leading manufacturer and OEM partner for precision engine bearings since 1960, with a full range of sizes and clearance options available to suit the most demanding performance builds.