24
EN
TECHNICAL OWNER MANUAL
8.2 Approved Gearing
HARMONY TECHNICAL DATA
• Sprocket Ratio = Front chain ring / Rear sprocket
- 2.1 minimum sprocket ratio for mid-motor eBikes with 250W rating or lower
- 1.8 minimum sprocket ratio for all pedal bicycles and front-motor eBikes
58 & above
56
54
52
50
48
46
44
42
40
39
38
36
34
33
32
30
28
27 & below
NuVinci Cycling rear sprocket
Standard Front chain ring / sprocket
23 & above
22
21
20
19
18
17
16
15
14
sBosch GEN2 front Sprocket
Approved for any bicycle (including 250W mid-motor-eBikes)
Approved for bicycles and front hub motor eBikes (Not approved for mid-motor eBikes)
Not approved for any bicycle
16 17 18 19 20 21 22 23 24 26 28