Ask Miles, our Setup AI that’s been trained on the RC10 T4 Family.
Stock gearing for the Team Associated RC10 T4 Family, with common pinions and their ratios.
| Pinion | Spur ÷ pinion | FDR |
|---|---|---|
| 16T | 5.44 | 14.14 |
| 17T | 5.12 | 13.31 |
| 18T | 4.83 | 12.57 |
| 19T | 4.58 | 11.91 |
| 20T | 4.35 | 11.31 |
| 21T | 4.14 | 10.77 |
| 22T | 3.95 | 10.28 |
| 23T | 3.78 | 9.83 |
| 24T | 3.63 | 9.43 |
| 25T | 3.48 | 9.05 |
| 26T | 3.35 | 8.70 |
| 27T | 3.22 | 8.38 |
| 28T | 3.11 | 8.08 |
| 29T | 3.00 | 7.80 |
| 30T | 2.90 | 7.54 |
Shaded rows are the pinions most 1/10 2WD truck setups run on the stock spur.
What pinion should I run?
Tell us your motor and track and get a starting pinion for the Team Associated RC10 T4 Family, with the range racers in the class run.
Get a recommendation →Shop pinion gears at AMain →It depends on your motor and the track. In the 1/10 2WD truck class, racers gear by final drive ratio: 7.5–8.5T near 10.14, 13.5T near 8.27. On the RC10 T4 Family's stock 87T spur that is about 22T for 7.5–8.5T, 27T for 13.5T. Tight tracks gear down, open tracks gear up. For a starting pinion matched to your motor, use the So Dialed Pinion Recommender with the RC10 T4 Family selected.
The RC10 T4 Family has an internal ratio of 2.6:1. Final drive ratio = spur ÷ pinion × 2.6. With the stock 87T spur, a 16T pinion gives an FDR of 14.14 and a 30T gives 7.54.
87 teeth. Changing the spur moves every pinion's ratio at once; most racers leave the spur and tune with the pinion.
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