The 7700Kv motor lets it all hang out for 6 cell or 2s lipo bashing and racing. On 6 cell NiMH the 7700Kv motor turns an easy 45mph in standard 10th scale buggies and trucks with standard gearing. With 2s lipo packs, you can expect 50mph for very large tracks or high speed runs. The 7700Kv motor is roughly equivalent in top speed to a very good 5t to 7t brushed motor on 6 cells. Due to extreme motor RPMs, the 7700Kv motor is limited to 8 cell NiMH or 2s Lipo MAX4