Ask Miles, our Setup AI that’s been trained on the B10TR.
Setups
Gearing
Stock gearing for the PR Racing B10TR, with common pinions and their ratios.
| Pinion | Spur ÷ pinion | FDR |
|---|---|---|
| 16T | 5.06 | 13.26 |
| 17T | 4.76 | 12.48 |
| 18T | 4.50 | 11.79 |
| 19T | 4.26 | 11.17 |
| 20T | 4.05 | 10.61 |
| 21T | 3.86 | 10.11 |
| 22T | 3.68 | 9.65 |
| 23T | 3.52 | 9.23 |
| 24T | 3.38 | 8.84 |
| 25T | 3.24 | 8.49 |
| 26T | 3.12 | 8.16 |
| 27T | 3.00 | 7.86 |
| 28T | 2.89 | 7.58 |
| 29T | 2.79 | 7.32 |
| 30T | 2.70 | 7.07 |
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 PR Racing B10TR, 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 B10TR?
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 B10TR's stock 81T spur that is about 21T for 7.5–8.5T, 26T 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 B10TR selected.
What is the internal ratio (transmission ratio) of the PR Racing B10TR?
The B10TR has an internal ratio of 2.62:1. Final drive ratio = spur ÷ pinion × 2.62. With the stock 81T spur, a 16T pinion gives an FDR of 13.26 and a 30T gives 7.07.
How many teeth is the stock spur gear on the PR Racing B10TR?
81 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. Part numbers link to AMain.
- Front
- 550 cst
- Rear
- 500 cst
- Front
- 5.04lb White/yellow #02530046 →
- Rear
- 3.60lb Blue/red #02530076 →
- Front
- 2 x 1.8mm
- Rear
- 2 x 1.8mm
What shock oil does the PR Racing B10TR come with?
Out of the box the B10TR runs 550 cst front, 500 cst rear, on 2 x 1.8mm front, 2 x 1.8mm 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 B10TR come with?
The kit springs are 5.04lb White/yellow (#02530046) front, 3.60lb Blue/red (#02530076) rear. Stiffer springs suit high grip and big jumps; softer springs add grip on slick or bumpy tracks.
Setup Help
All 1/10 Off-Road Cars →
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Setup App & Race Log
Your PR Racing B10TR is in the RC Setup App
Save every setup change you make to your PR Racing B10TR, get AI tuning answers for that exact car, and log your races — at the track or back in the pits.
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