MST TCR-FF

Q&A, gearing, kit settings, manual, and guides

On-road•Touring/GT•1/10 scale•FWD

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Gearing

Stock gearing for the MST TCR-FF, with common pinions and their ratios.

Stock spur

75T

Internal ratio

1:1

Typical pinion

17.5T ≈ 17T

Class medians on the stock spur. For your motor and track →

Pinion	Spur ÷ pinion	FDR
36T	2.08	2.08
37T	2.03	2.03
38T	1.97	1.97
39T	1.92	1.92
40T	1.88	1.88
41T	1.83	1.83
42T	1.79	1.79
43T	1.74	1.74
44T	1.70	1.70
45T	1.67	1.67
46T	1.63	1.63
47T	1.60	1.60

Shaded rows are the pinions most 1/10 FWD 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 MST TCR-FF, with the range racers in the class run.

Get a recommendation →Shop pinion gears at AMain →

What pinion gear should I use on the MST TCR-FF?

It depends on your motor and the track. In the 1/10 FWD touring/gt class, racers gear by final drive ratio: 17.5T near 4.51. On the TCR-FF's stock 75T spur that is about 17T for 17.5T. Tight tracks gear down, open tracks gear up. For a starting pinion matched to your motor, use the So Dialed Pinion Recommender with the TCR-FF selected.

What is the internal ratio (transmission ratio) of the MST TCR-FF?

The TCR-FF has an internal ratio of 1:1. Final drive ratio = spur ÷ pinion × 1. With the stock 75T spur, a 36T pinion gives an FDR of 2.08 and a 47T gives 1.60.