1975 - 1981
YAMAHA RD 125 D DX
Steel rear sprocket
| JT Sprockets
Fits to:
YAMAHA RD125 DX Spoke Wheel [1975 - 1977]
YAMAHA RD125 DX Alloy Wheel [1978 - 1981]
1973 - 1975 YAMAHA RD 125 D DX
Transmision ratio:
| 13 | 14 | 15 | ||
| 31 | 2.38 -12.1% | 2.21 -18.4% | 2.07 -23.9% | |
| 35 | 2.69 -0.8% | 2.50 -7.9% | 2.33 -14.0% | |
| 36 | 2.77 +2.0% | 2.57 -5.3% | 2.40 -11.6% | |
| 37 | 2.85 +4.9% | 2.64 -2.6% | 2.47 -9.1% | |
| 38 | 2.92 +7.7% | 2.71 standard | 2.53 -6.7% | |
| 39 | 3.00 +10.5% | 2.79 +2.6% | 2.60 -4.2% | |
| 42 | 3.23 +19.0% | 3.00 +10.5% | 2.80 +3.2% | |
| 43 | 3.31 +21.9% | 3.07 +13.2% | 2.87 +5.6% | |
| 45 | 3.46 +27.5% | 3.21 +18.4% | 3.00 +10.5% | |
| 49 | 3.77 +38.9% | 3.50 +28.9% | 3.27 +20.4% | |
| 54 | 4.15 +53.0% | 3.86 +42.1% | 3.60 +32.6% | |
Specifications
| Manufacturer | JT Sprockets |
|---|---|
| Sprocket material | C49 High Carbon Steel |
| Number of teeth | 39 |
| Chain pitch | 428 |