The XRAY 305621 Pinion Gear is a 21-tooth, 48-pitch part intended for use with the T4 2017 series. Built from high-quality steel and produced on XRAY gear machinery, it keeps tooth geometry accurate for predictable drivetrain behaviour.
Made for committed RC hobbyists, the XRAY pinion features chamfered tooth edges and a run-in profile to promote even wear and quieter operation. Its sturdy steel construction and careful machining help it stand up to repeated track sessions.
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