Ask Miles, our Setup AI that’s been trained on the RC8 T4.2e.
Setups
Gearing
Stock gearing for the Team Associated RC8 T4.2e, with common pinions and their ratios.
| Pinion | Spur ÷ pinion | FDR |
|---|---|---|
| 12T | 4.00 | 17.76 |
| 13T | 3.69 | 16.39 |
| 14T | 3.43 | 15.22 |
| 15T | 3.20 | 14.21 |
| 16T | 3.00 | 13.32 |
| 17T | 2.82 | 12.54 |
| 18T | 2.67 | 11.84 |
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 Team Associated RC8 T4.2e, with the range racers in the class run.
Get a recommendation →Shop pinion gears at AMain → (opens in new tab)What pinion gear should I use on the Team Associated RC8 T4.2e?
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 RC8 T4.2e's stock 48T spur that is about 15T 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 RC8 T4.2e selected.
What is the internal ratio (transmission ratio) of the Team Associated RC8 T4.2e?
The RC8 T4.2e has an internal ratio of 4.44:1. Final drive ratio = spur ÷ pinion × 4.44. With the stock 48T spur, a 12T pinion gives an FDR of 17.76 and a 18T gives 11.84.
How many teeth is the stock spur gear on the Team Associated RC8 T4.2e?
48 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
- 45 wt
- Rear
- 40 wt
- Front
- 6x1.3mm flat
- Rear
- 6x1.4mm flat
- Front
- 15,000 cst
- Center
- 15,000 cst
- Rear
- 7,000 cst
What shock oil does the Team Associated RC8 T4.2e come with?
Out of the box the RC8 T4.2e runs 45 wt front, 40 wt rear (Team Associated oil), on 6x1.3mm flat front, 6x1.4mm flat 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 Team Associated RC8 T4.2e come with?
The kit springs are 5.7lb Yellow (#81226) front, 4.7lb Red (#81237) rear. Stiffer springs suit high grip and big jumps; softer springs add grip on slick or bumpy tracks.
What diff fluid does the Team Associated RC8 T4.2e come with?
The kit diff fluid is 15,000 cst front, 15,000 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
All 1/8 Off-Road Cars →
Free to start · iOS & Android
RC Setup App
Your Team Associated RC8 T4.2e is in the RC Setup App
Save every setup change you make to your Team Associated RC8 T4.2e, get AI tuning answers for that exact car, and log your races — at the track or back in the pits.
- Setup Tracking
- AI Mechanic answers
- Find & Share Setups
- Race Log
- Gear Ratio Calculator
- Free to use
