KING RACING main bearings XP for Mazda B6/BP

Crankshaft main bearing set. Main bearings hold the crankshaft in the block and carry the full combustion load, which is why race-grade bearings pay off in modified engines.

The King XP series (pMaxBlack™) is a tri-metal copper-lead bearing with a hardened overlay for high, sustained track loads. The coated version (pMaxKote™) adds a polymer layer that reduces friction and protects during brief oil starvation.

• Journal diameter: 49,939–49,957 mm
• Housing bore: 52,080–54,018 mm
• Bearing width: 17.4 mm
• Max. wall thickness (STD): 2.01 mm
• Manufacturer part number: MB5304XP

Available sizes:

• STD – standard size
• undersize 0.25 mm
• STDX – standard with extra clearance (+0.025 mm)
• +0.025 mm – polished crank
• undersize 0.5 mm

Fits engines:

• Mazda B6 (1.6L 16v)
• Mazda BP (1.8L 16v)

King Engine Bearings has been making bearings since 1960 and also supplies the aerospace and automotive industries. Bearings are their only product.