This is the traxxas complete speed gearing transmission (9. 7:1 reduction ratio) with titan 180 87t motor boost the top end of your trx-4m with this speed transmission. However, there is higher gearing available, larger tires will increase the speed a bit, and i'm sure you could find a faster 180 motor. If the truck can maintain close to top speed on your trail, i would think รขโ‚ฌยฆ

Trx-4m bridges the gap between the small crawler scene and 1/10 scale quality and performance.