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Par reference KING RACE
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Par reference KING RACE
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MB4058XP0.25
New product
King Racing tri-metal main bearing set, ref. MB4058XP0.25, -0.25mm undersize for reground blocks, for Drift, Rally, Circuit and TrackDay builds.
The King Racing main bearing set (reference MB4058XP0.25) is sized -0.25mm undersize for main journals reground during an engine rebuild. Tri-metal construction for greater fatigue resistance and load capacity than OE bearings, a key upgrade alongside forged connecting rods and crankshaft.
Corresponds to a main journal reground 0.25mm below standard. Always confirm your exact regrind dimension with your machinist before ordering.
Ships from NSB Concept's France stock the same day (Monday-Friday, before 5pm) when available, or within 72 hours from our European supplier network.
