Genuine Honda K-Series K20A/K20Z Main Bearing (Daido) - Upper Block UPPER:Brown Fast Response Times: Rapid operational

Fast Response Times: Rapid operational readiness ensures your ECU receives real-time data for precise closed-loop fueling adjustments

Achieving a perfect seal is critical for maximizing compression and power

Dynamic Crankshaft Balancing for high-RPM smoothness

9 controller for precise

Genuine Honda K-Series K20A/K20Z Main Bearing (Daido) - Upper Block UPPER:Brown Fast Response Times: Rapid operationalProduct Description Genuine Honda main crankshaft bearings (Upper Block) facilitate the rotation of the crankshaft within the cylinder block with minimal friction and wear. These precision components are manufactured to specific tolerances and are colour coded to allow builders to achieve the exact oil clearance required for high performance operation. Each bearing is supplied as a single half to allow for specialised sizing across the five main