1978 - 1980
YAMAHA YZ 80
Steel front sprocket
| JT Sprockets
Fits to:
YAMAHA YZ80 G [1980 - 1980]
YAMAHA YZ80 E,F [1978 - 1979]
1993 - 2001 YAMAHA YZ 80
Transmision ratio:
| 11 | 12 | 13 | 14 | 15 | 16 | 17 | ||
| 44 | 4.00 +19.1% | 3.67 +9.2% | 3.38 +0.8% | 3.14 -6.4% | 2.93 -12.6% | 2.75 -18.1% | 2.59 -22.9% | |
| 46 | 4.18 +24.6% | 3.83 +14.2% | 3.54 +5.4% | 3.29 -2.1% | 3.07 -8.7% | 2.88 -14.4% | 2.71 -19.4% | |
| 47 | 4.27 +27.3% | 3.92 +16.7% | 3.62 +7.7% | 3.36 standard | 3.13 -6.7% | 2.94 -12.5% | 2.76 -17.6% | |
| 48 | 4.36 +30.0% | 4.00 +19.1% | 3.69 +10.0% | 3.43 +2.1% | 3.20 -4.7% | 3.00 -10.6% | 2.82 -15.9% | |
| 49 | 4.45 +32.7% | 4.08 +21.6% | 3.77 +12.3% | 3.50 +4.3% | 3.27 -2.7% | 3.06 -8.8% | 2.88 -14.1% | |
| 50 | 4.55 +35.4% | 4.17 +24.1% | 3.85 +14.6% | 3.57 +6.4% | 3.33 -0.7% | 3.12 -6.9% | 2.94 -12.4% | |
| 51 | 4.64 +38.1% | 4.25 +26.6% | 3.92 +16.9% | 3.64 +8.5% | 3.40 +1.3% | 3.19 -5.1% | 3.00 -10.6% | |
| 52 | 4.73 +40.8% | 4.33 +29.1% | 4.00 +19.1% | 3.71 +10.6% | 3.47 +3.3% | 3.25 -3.2% | 3.06 -8.9% | |
| 54 | 4.91 +46.2% | 4.50 +34.0% | 4.15 +23.7% | 3.86 +14.9% | 3.60 +7.2% | 3.38 +0.5% | 3.18 -5.4% | |
Specifications
| Manufacturer | JT Sprockets |
|---|---|
| Material | Steel |
| Position | Front |
| Type | Countershaft |
| Units | Each |
| Chain pitch | 428 |
| Number of teeth | 12 |
| Color | Natural |
| Material | Steel |
| Position | Front |
| Units | Each |
| Chain pitch | 428 |
| Number of teeth | 13 |
| Type | Countershaft |
| Material | Steel |
| Position | Front |
| Type | Countershaft |
| Units | Each |
| Chain pitch | 428 |
| Number of teeth | 14 |
| Chain pitch | 428 |
| Number of teeth | 15 |
| Chain pitch | 428 |
| Number of teeth | 16 |