Setups
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Gearing
Stock gearing for the Traxxas 4-Tec 2.0/3.0, with common pinions and their ratios.
| Pinion | Spur ÷ pinion | FDR |
|---|---|---|
| 20T | 3.50 | 9.97 |
| 21T | 3.33 | 9.50 |
| 22T | 3.18 | 9.07 |
| 23T | 3.04 | 8.67 |
| 24T | 2.92 | 8.31 |
| 25T | 2.80 | 7.98 |
| 26T | 2.69 | 7.67 |
| 27T | 2.59 | 7.39 |
| 28T | 2.50 | 7.13 |
| 29T | 2.41 | 6.88 |
| 30T | 2.33 | 6.65 |
| 31T | 2.26 | 6.44 |
| 32T | 2.19 | 6.23 |
| 33T | 2.12 | 6.05 |
| 34T | 2.06 | 5.87 |
| 35T | 2.00 | 5.70 |
| 36T | 1.94 | 5.54 |
| 37T | 1.89 | 5.39 |
| 38T | 1.84 | 5.25 |
| 39T | 1.79 | 5.12 |
| 40T | 1.75 | 4.99 |
| 41T | 1.71 | 4.87 |
| 42T | 1.67 | 4.75 |
| 43T | 1.63 | 4.64 |
| 44T | 1.59 | 4.53 |
| 45T | 1.56 | 4.43 |
| 46T | 1.52 | 4.34 |
| 47T | 1.49 | 4.24 |
| 48T | 1.46 | 4.16 |
| 49T | 1.43 | 4.07 |
| 50T | 1.40 | 3.99 |
| 51T | 1.37 | 3.91 |
| 52T | 1.35 | 3.84 |
Shaded rows are the pinions most 1/10 4WD touring/gt setups run on the stock spur.
What pinion should I run?
Tell us your motor and track and get a starting pinion for the Traxxas 4-Tec 2.0/3.0, with the range racers in the class run.
Get a recommendation →Shop pinion gears at AMain →What pinion gear should I use on the Traxxas 4-Tec 2.0/3.0?
It depends on your motor and the track. In the 1/10 4WD touring/gt class, racers gear by final drive ratio: 6T and below near 7.34, 13.5T near 4.51, 17.5T near 4.51, 21.5T and up near 3.65. On the 4-Tec 2.0/3.0's stock 70T spur that is about 27T for 6T and below, 44T for 13.5T, 44T for 17.5T, 55T for 21.5T and up. Tight tracks gear down, open tracks gear up. For a starting pinion matched to your motor, use the So Dialed Pinion Recommender with the 4-Tec 2.0/3.0 selected.
What is the internal ratio (transmission ratio) of the Traxxas 4-Tec 2.0/3.0?
The 4-Tec 2.0/3.0 has an internal ratio of 2.85:1. Final drive ratio = spur ÷ pinion × 2.85. With the stock 70T spur, a 20T pinion gives an FDR of 9.97 and a 52T gives 3.84.
How many teeth is the stock spur gear on the Traxxas 4-Tec 2.0/3.0?
70 teeth. Changing the spur moves every pinion's ratio at once; most racers leave the spur and tune with the pinion.
Kit setup
Kit shock setup (2.0-3.0 or VXL). Part numbers link to AMain.
- Front
- 50 wt
- Rear
- 50 wt
What shock oil does the Traxxas 4-Tec 2.0/3.0 come with?
Out of the box the 4-Tec 2.0/3.0 runs 50 wt front, 50 wt rear (Traxxas oil), on 2-hole (#3768) front, 2-hole (#3768) rear pistons. That is the kit setup; you will need to adjust it for your track conditions. The RC Setup App can help dial it in.
What springs does the Traxxas 4-Tec 2.0/3.0 come with?
The kit springs are 3.7 Red (#8362) front, 3.7 Red (#8362) rear. Stiffer springs suit high grip and big jumps; softer springs add grip on slick or bumpy tracks.
Setup Help
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Setup App & Race Log
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