RPM Losi Promoto MX Crash Structure (White) t-maxx If you’d like to learn

If you’d like to learn about suspension dynamics

Chrome plated case

Wireless Frequency: 2

When running your Pro-Line Tires in Water

Spektrum - SPMX53S100H5

RPM Losi Promoto MX Crash Structure (White) t-maxx If you’d like to learnThe RPM Crash Structure (Radiator) for the Losi Promoto is here to solve those pesky breakage issues. They strengthened the most common stock breakage point by adding mock louvers the full length of the "radiator". These louvers are actually strengthening ribs that look like angled fins used to deflect rocks from hitting the radiator on full sized dirt bikes. By adding that extra scale touch, RPM increased the strength of their version significantly.