Kanthi torsi maksimum 75Nm lan output daya 250W, CM2503 cocok kanggo mancal e-city utawa e-trekking bike.Amarga desain sensor dual sistem, penunggang nduweni kontrol lengkap ing kabeh wektu lan seneng banget nyaman.
Kelly 
| Panganggone* | eCity, eFolding |
| Ukuran Roda (Inci) | Opsional |
| Konstruksi | Gear drive |
| Tegangan Rated (DCV) | 36 |
| nT(Rpm) | 110 |
| Daya Rated (W) | 250 |
| nO(Rpm) | 120 |
| Torsi Maks (Nm) | 75 |
| Efisiensi (%) | ≧ 80 |
| Bobot (kg) | <2.3 |
| Tingkat Kebisingan (dB) | <55 |
| Suhu operasi | -20-45 ℃ |
| Sensor Pedal Kab | Kacepetan & Torsi Integrasi |
| Rem | E-Brake |
| Kapasitas Drive Cahya (DCV/W) | 12V/6W (Maks.) |
| Sertifikasi | CE / FCC / EN15194 / RoHS |
| Tes | Anti banyu: IPX6 Salt Spray Test Standard(h): 96 Standard(h): 96 |
