Product Description
King XP Series LS Connecting Rod Bearing Set – .020" Undersize
Fits GM Gen III/IV LS 4.8L, 5.3L, 5.7L, 6.0L and 6.2L Engines and Small Block Chevy Applications
The King XP Series CR807XPN020 connecting rod bearing set is for crankshafts with rod journals machined .020" below standard diameter. It fits compatible GM LS and Small Block Chevy builds using stock or aftermarket connecting rods and crankshafts, including aftermarket forged steel crankshafts. King’s pMax Black tri-metal construction pairs a copper-lead layer and nickel barrier with a hardened performance overlay designed to resist surface fatigue under sustained loads. For a rebuild, match this set to the finished rod journal diameter: CR807XPN020 is a .020" undersize set, not a standard-size set.
Key Features & Benefits
- .020" Undersize Fit: Use this size when the crankshaft rod journals have been ground .020" under standard diameter. The undersize designation refers to the journal diameter, not the bearing oil clearance.
- pMax Black Tri-Metal Construction: The XP bearing uses a copper-lead layer with a nickel barrier. King reports that its pMax Black structure is 24% harder than conventional tri-metal race bearings.
- SecureBond Layer Adhesion: King’s SecureBond process strengthens the bond between the top and intermediate bearing layers to help keep them stable under load.
- Hardened Performance Overlay: The .0005" overlay provides a hardened working surface that resists fatigue during extended high-load operation.
- Increased Load Capacity: King reports 15% to 30% greater load capacity than traditional bearings. The XP series is designed for performance and racing engines that sustain high loads for extended periods.
Key Fitments
- GM Gen III and Gen IV LS: 4.8L, 5.3L, 5.7L, 6.0L and 6.2L engines with compatible rods and crankshaft rod journals machined .020" undersize.
- Small Block Chevy (SBC): Applications using the corresponding rod bearing dimensions and .020" undersize crankshaft rod journals.
