Tri-metal main bearings KING RACING, AUDI 2.2 20V 3B AAN ABY ADU

The KING RACING tri-metal main bearing sets for the 3B, AAN, ABY and ADU engines contain 12 bearings.

Technical specification

• Crankshaft main journal diameter (min/max): 57.98 / 57.96mm
• Main bearing housing diameter (min/max): 63.00 / 63.02mm
• Max thickness: 2.499mm
• Size(s): standard, standard with HX clearance, +0.026, +0.25mm or +0.50mm
• Anti-friction coating: none
• References: MB605, MB605XP, MB605XP STDX, MB605XP.026, MB605XP0.25, MB605XP0.5

King Racing has been designing and manufacturing high performance, high quality bearings since 1960. Beyond its production machinery, King Racing relies on simulation software to analyse the thermodynamics, the dynamics and the elasto-hydrodynamics of its bearings. King Racing tri-metal main bearings are made from pMax Black, a tri-metal alloy 24% stronger than any existing tri-metal main bearing.

King Racing bearings are built up from 3 to 4 layers, depending on the application:

Outside: steel Intermediate: lead bronze Inside: babbitt with a high copper content Anti-friction coating with lubricant and ceramic additives