King B-Series/K-Series Performance Main Bearings (0.25 mm)

King B-Series/K-Series Performance Main Bearings deliver precision engineering for high-revving Honda engines. These 0.25mm undersized bearings feature advanced tri-metal construction with superior load capacity and heat dissipation. Engineered for forced induction and high-boost applications, they maintain tight tolerances under extreme pressure. Ideal for track builds, turbo conversions, and competitive racing where reliability meets performance. Direct fit for B16, B18, K20, and K24 platforms.