For racers tuning their T4 2017, the XRAY 305919 narrow pinion delivers a light and robust gearing option. Fabricated from aircraft duraluminum, it is 1.5mm thinner and around 25% lighter than typical pinions, helping reduce rotational mass while keeping rigidity.
This narrow pinion is machined on a specially adapted precision gear machine to ensure excellent concentricity. All edges are chamfered and the parts are finished with a hardcoat to improve surface hardness and dimensional stability.
The XRAY 19T pinion meshes cleanly with standard spur gears and works particularly well with XRAY spurs to remove throttle on/off chatter, resulting in a smoother throttle transition.
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