| Combo | PN | ESC Motor | Main Application |
| JS2 | 38020239 | XR10 JUSTOCK ESC JUSTOCK Motor 10.5T | 1:10 ,1:12 On-Road (Truggy / Drifting Car / F1 / Monster) & Off-Road (Buggy / 2WD SC Truck / Truck) STOCK / SPOR T Race (choose the motor base on competition rules.) Fr ee / casual run for new beginners. |
| JS4 | 38020240 | XR10 JUSTOCK ESC JUSTOCK Motor 13.5T | Same |
| JS5 | 38020241 | XR10 JUSTOCK ESC JUSTOCK Motor 17.5T | Same |
| JS6 | 38020242 | XR10 JUSTOCK ESC JUSTOCK Motor 21.5T | Rock Crawler 1/10 On-road racing |
| JS7 | 38020243 | XR10 JUSTOCK ESC JUSTOCK Motor 25.5T | Rock Crawler, 1/10 On-road racing |