Setups
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Gearing
Stock gearing for the TLR 8IGHT-T 4.0, with common pinions and their ratios.
| Pinion | Spur ÷ pinion | FDR |
|---|---|---|
| 12T | 4.25 | 16.66 |
| 13T | 3.92 | 15.38 |
| 14T | 3.64 | 14.28 |
| 15T | 3.40 | 13.33 |
| 16T | 3.19 | 12.49 |
| 17T | 3.00 | 11.76 |
| 18T | 2.83 | 11.11 |
Shaded rows are the pinions most 1/8 4WD 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 TLR 8IGHT-T 4.0, with the range racers in the class run.
Get a recommendation →Shop pinion gears at AMain →What pinion gear should I use on the TLR 8IGHT-T 4.0?
It depends on your motor and the track. In the 1/8 4WD truck class, racers gear by final drive ratio: 1800–2300 kV near 13.97. On the 8IGHT-T 4.0's stock 51T spur that is about 14T for 1800–2300 kV. Tight tracks gear down, open tracks gear up. For a starting pinion matched to your motor, use the So Dialed Pinion Recommender with the 8IGHT-T 4.0 selected.
What is the internal ratio (transmission ratio) of the TLR 8IGHT-T 4.0?
The 8IGHT-T 4.0 has an internal ratio of 3.92:1. Final drive ratio = spur ÷ pinion × 3.92. With the stock 51T spur, a 12T pinion gives an FDR of 16.66 and a 18T gives 11.11.
How many teeth is the stock spur gear on the TLR 8IGHT-T 4.0?
51 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
- 37.5 wt
- Rear
- 32.5 wt
- Front
- Red #243036 →
- Rear
- White (#243037) - stiffest
- Front
- 7,000 cst
- Center
- 10,000 cst
- Rear
- 7,000 cst
What shock oil does the TLR 8IGHT-T 4.0 come with?
Out of the box the 8IGHT-T 4.0 runs 37.5 wt front, 32.5 wt rear (Team Losi oil), on 8 x 1.3mm (#243011) front, 4 x 1.2mm, 4 x 1.3mm (#243012) 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 TLR 8IGHT-T 4.0 come with?
The kit springs are Red (#243036) front, White (#243037) - stiffest rear. Stiffer springs suit high grip and big jumps; softer springs add grip on slick or bumpy tracks.
What diff fluid does the TLR 8IGHT-T 4.0 come with?
The kit diff fluid is 7,000 cst front, 10,000 cst center, 7,000 cst rear. Thicker front adds steering on power; thicker center sends more drive rearward; thicker rear stabilizes the car under throttle.
Setup Help
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Setup App & Race Log
Your TLR 8IGHT-T 4.0 is in the RC Setup App
Save every setup change you make to your TLR 8IGHT-T 4.0, get AI tuning answers for that exact car, and log your races — at the track or back in the pits.
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