King Bearings XP Rod Bearings STDX BMW Z3 M52B25 S52B32 M3 S50B30US S52B32

Engine Applications :

2.0L SOHC/DOHC 12v/24v M20B20, M50B20, M52B20
2.2L DOHC 24V M54B22
2.3L SOHC 12v M20B23
2.5L SOHC/DOHC 12v/24v M20B25, M50B25, M52B25, M52TUB25, M54B25
2.7L SOHC/DOHC 12v/24v M20B27, M50B27
2.8L DOHC M52B28, M52TUB28
3.0L DOHC 24v M54B30
3.0L DOHC 24v S50B30US
3.2L DOHC 24v S52B32

Successful race engine builders are constantly pushing the limits of load capacity to new levels. Race bearings today inevitably need to match these demands with more competitive bearings. At King Racing we met the challenge with the XP high performance bearings series.

The XP series is a line of bearings with advanced metallurgical and geometric technologies that meet extreme performance loads. It was developed for all performance applications that use forged steel aftermarket crankshafts and produce high loads for extended periods.

King Racing’s XP series features pMax Black™, a unique tri-metal structure that is 24% harder than any other conventional tri-metal race bearing. pMax Black™ together with the XP geometric features are the ideal combination for performance racing. For more on King Racing technologies visit TechLab

Dimension/undersize e.g "STD" for standard, X equals .001" extra clearance

Bearing Size : STDX

Bearing Size metric STDX

Crankshaft undersize : 0

Additional shell thickness (on nominal) : -.0005"