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Stock gearing for the Team Losi NASCAR 1/12 (Oval), with common pinions and their ratios.
| Pinion | Spur ÷ pinion | FDR |
|---|---|---|
| 20T | 2.95 | 7.38 |
| 21T | 2.81 | 7.02 |
| 22T | 2.68 | 6.70 |
| 23T | 2.57 | 6.41 |
| 24T | 2.46 | 6.15 |
| 25T | 2.36 | 5.90 |
| 26T | 2.27 | 5.67 |
| 27T | 2.19 | 5.46 |
| 28T | 2.11 | 5.27 |
| 29T | 2.03 | 5.09 |
| 30T | 1.97 | 4.92 |
| 31T | 1.90 | 4.76 |
| 32T | 1.84 | 4.61 |
| 33T | 1.79 | 4.47 |
| 34T | 1.74 | 4.34 |
| 35T | 1.69 | 4.21 |
| 36T | 1.64 | 4.10 |
| 37T | 1.59 | 3.99 |
| 38T | 1.55 | 3.88 |
| 39T | 1.51 | 3.78 |
| 40T | 1.48 | 3.69 |
| 41T | 1.44 | 3.60 |
| 42T | 1.40 | 3.51 |
| 43T | 1.37 | 3.43 |
| 44T | 1.34 | 3.35 |
| 45T | 1.31 | 3.28 |
| 46T | 1.28 | 3.21 |
| 47T | 1.26 | 3.14 |
| 48T | 1.23 | 3.07 |
| 49T | 1.20 | 3.01 |
| 50T | 1.18 | 2.95 |
What pinion should I run?
Tell us your motor and track and get a starting pinion for the Team Losi NASCAR 1/12 (Oval), with the range racers in the class run.
Get a recommendation →Shop pinion gears at AMain →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 NASCAR 1/12 (Oval) 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.
The NASCAR 1/12 (Oval) has an internal ratio of 2.5:1. Final drive ratio = spur ÷ pinion × 2.5. With the stock 59T spur, a 20T pinion gives an FDR of 7.38 and a 50T gives 2.95.
59 teeth. Changing the spur moves every pinion's ratio at once; most racers leave the spur and tune with the pinion.
Kit shock setup. Part numbers link to AMain.
The kit springs are Black / Black rear. Stiffer springs suit high grip and big jumps; softer springs add grip on slick or bumpy tracks.
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