The XRAY 355154 Active Center Differential Spur Gear is intended as a direct replacement for legacy XB chassis requiring a 42-tooth centre. Fabricated from HUDY steel, it delivers consistent tooth form and durability.
This spur gear is manufactured from HUDY steel developed specifically for gear use and is subject to a heat treatment that increases surface hardness while keeping the inner material resilient.
Produced using precise German tooling, each gear is checked for dimensional accuracy so it meshes cleanly with XRAY differential components and minimises runout.
The laser-stamped "Active 42T" marking makes identification straightforward during servicing or when comparing spare parts.
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