Made for the XRAY NT1, this 21T pinion is manufactured from durable 7075 T6 aluminum with a hardcoat finish to keep weight down while resisting wear. The accurately shaped teeth reduce vibration and help deliver clean, efficient power transfer for lap-to-lap consistency.
Each gear is cut on a dedicated gear machine to ensure true running and minimal vibration under load. The internal fine thread matches XCA clutchbells, both standard and lightweight versions, for quick fitting. An etched tooth count lets you confirm gearing at a glance when swapping sizes.
Offered in common racing tooth counts, these pinions let you dial in top speed or acceleration depending on track layout. The consistent machining makes it simple to test different ratios while keeping predictable drive feel.
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