Ask Miles, our Setup AI that’s been trained on the R200X.
Setups
Gearing
Stock gearing for the PR Racing R200X, with common pinions and their ratios.
| Pinion | Spur ÷ pinion | FDR |
|---|---|---|
| 15T | 5.33 | 13.87 |
| 16T | 5.00 | 13.00 |
| 17T | 4.71 | 12.24 |
| 18T | 4.44 | 11.56 |
| 19T | 4.21 | 10.95 |
| 20T | 4.00 | 10.40 |
| 21T | 3.81 | 9.90 |
| 22T | 3.64 | 9.45 |
| 23T | 3.48 | 9.04 |
| 24T | 3.33 | 8.67 |
| 25T | 3.20 | 8.32 |
| 26T | 3.08 | 8.00 |
| 27T | 2.96 | 7.70 |
| 28T | 2.86 | 7.43 |
| 29T | 2.76 | 7.17 |
| 30T | 2.67 | 6.93 |
| 31T | 2.58 | 6.71 |
| 32T | 2.50 | 6.50 |
| 33T | 2.42 | 6.30 |
| 34T | 2.35 | 6.12 |
| 35T | 2.29 | 5.94 |
What pinion should I run?
Tell us your motor and track and get a starting pinion for the PR Racing R200X, with the range racers in the class run.
Get a recommendation →Shop pinion gears at AMain →What pinion gear should I use on the PR Racing R200X?
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 R200X 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 PR Racing R200X?
The R200X has an internal ratio of 2.6:1. Final drive ratio = spur ÷ pinion × 2.6. With the stock 80T spur, a 15T pinion gives an FDR of 13.87 and a 35T gives 5.94.
How many teeth is the stock spur gear on the PR Racing R200X?
80 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 (Medium grip). Part numbers link to AMain.
- Front
- 350 cst
- Rear
- 400 cst
- Front
- 2.97lb Transparent #02500096 →
- Rear
- Black #02530026 →
- Front
- 2 x 1.6mm
- Rear
- 2 x 1.6mm
What shock oil does the PR Racing R200X come with?
Out of the box the R200X runs 350 cst front, 400 cst rear, on 2 x 1.6mm front, 2 x 1.6mm 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 PR Racing R200X come with?
The kit springs are 2.97lb Transparent (#02500096) front, Black (#02530026) 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
Your PR Racing R200X is in the RC Setup App
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