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Setups
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Gearing
Stock gearing for the XRAY X8 '26, with common pinions and their ratios.
| Pinion | Spur ÷ pinion | FDR |
|---|---|---|
| 11T | 4.82 | 4.82 |
| 12T | 4.42 | 4.42 |
| 13T | 4.08 | 4.08 |
| 14T | 3.79 | 3.79 |
| 15T | 3.53 | 3.53 |
| 16T | 3.31 | 3.31 |
| 17T | 3.12 | 3.12 |
| 18T | 2.94 | 2.94 |
| 19T | 2.79 | 2.79 |
| 20T | 2.65 | 2.65 |
| 21T | 2.52 | 2.52 |
| 22T | 2.41 | 2.41 |
What pinion should I run?
Tell us your motor and track and get a starting pinion for the XRAY X8 '26, with the range racers in the class run.
Get a recommendation →Shop pinion gears at AMain →What pinion gear should I use on the XRAY X8 '26?
It depends on your motor and the track. A hotter motor (lower turns, higher KV) takes a smaller pinion; a tight track wants a lower gear than an open one. Start near the middle of the pinions the X8 '26 shipped with, run a few minutes, and check motor temperature before going up a tooth. The So Dialed Pinion Recommender gives a starting pinion for your motor where we have class data.
What is the internal ratio (transmission ratio) of the XRAY X8 '26?
The X8 '26 has an internal ratio of 1:1. Final drive ratio = spur ÷ pinion × 1. With the stock 53T spur, a 11T pinion gives an FDR of 4.82 and a 22T gives 2.41.
How many teeth is the stock spur gear on the XRAY X8 '26?
53 teeth. Changing the spur moves every pinion's ratio at once; most racers leave the spur and tune with the pinion.
Setup Help
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Setup App & Race Log
Your XRAY X8 '26 is in the RC Setup App
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