1977 - 1986
YAMAHA YZ 125
Steel front sprocket
| JT Sprockets
Fits to:
YAMAHA YZ125 K [1983 - 1983]
YAMAHA YZ125 E,F [1978 - 1979]
YAMAHA YZ125 D [1977 - 1977]
YAMAHA YZ125 L [1984 - 1984]
YAMAHA YZ125 G [1980 - 1980]
YAMAHA YZ125 N [1985 - 1985]
YAMAHA YZ125 S [1986 - 1986]
YAMAHA YZ125 H,J [1981 - 1982]
1980 - 1980 YAMAHA YZ 125
Transmision ratio:
| 12 | 13 | 14 | 15 | ||
| 38 | 3.17 -24.0% | 2.92 -29.8% | 2.71 -34.9% | 2.53 -39.2% | |
| 40 | 3.33 -20.0% | 3.08 -26.2% | 2.86 -31.4% | 2.67 -36.0% | |
| 41 | 3.42 -18.0% | 3.15 -24.3% | 2.93 -29.7% | 2.73 -34.4% | |
| 42 | 3.50 -16.0% | 3.23 -22.5% | 3.00 -28.0% | 2.80 -32.8% | |
| 43 | 3.58 -14.0% | 3.31 -20.6% | 3.07 -26.3% | 2.87 -31.2% | |
| 44 | 3.67 -12.0% | 3.38 -18.8% | 3.14 -24.6% | 2.93 -29.6% | |
| 45 | 3.75 -10.0% | 3.46 -16.9% | 3.21 -22.9% | 3.00 -28.0% | |
| 46 | 3.83 -8.0% | 3.54 -15.1% | 3.29 -21.1% | 3.07 -26.4% | |
| 47 | 3.92 -6.0% | 3.62 -13.2% | 3.36 -19.4% | 3.13 -24.8% | |
| 48 | 4.00 -4.0% | 3.69 -11.4% | 3.43 -17.7% | 3.20 -23.2% | |
| 49 | 4.08 -2.0% | 3.77 -9.5% | 3.50 -16.0% | 3.27 -21.6% | |
| 50 | 4.17 standard | 3.85 -7.7% | 3.57 -14.3% | 3.33 -20.0% | |
| 51 | 4.25 +2.0% | 3.92 -5.8% | 3.64 -12.6% | 3.40 -18.4% | |
| 52 | 4.33 +4.0% | 4.00 -4.0% | 3.71 -10.9% | 3.47 -16.8% | |
Specifications
| Manufacturer | JT Sprockets |
|---|---|
| Material | Steel |
| Position | Front |
| Type | Countershaft |
| Units | Each |
| Number of teeth | 13 |
| Chain pitch | 520 |
| Material | Steel |
| Position | Front |
| Units | Each |
| Chain pitch | 520 |
| Number of teeth | 14 |
| Type | Countershaft |
| Chain pitch | 520 |
| Number of teeth | 15 |