1977 - 1984
YAMAHA IT 250
Steel front sprocket
| JT Sprockets
Fits to:
YAMAHA IT250 H,J [1981 - 1982]
YAMAHA IT250 D,E,F [1977 - 1979]
YAMAHA IT250 K,L [1983 - 1984]
1977 - 1979 YAMAHA IT 250
Transmision ratio:
| 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | ||
| 38 | 3.80 +2.9% | 3.45 -6.4% | 3.17 -14.2% | 2.92 -20.8% | 2.71 -26.5% | 2.53 -31.4% | 2.38 -35.7% | 2.24 -39.5% | 2.11 -42.8% | |
| 40 | 4.00 +8.3% | 3.64 -1.5% | 3.33 -9.7% | 3.08 -16.7% | 2.86 -22.6% | 2.67 -27.8% | 2.50 -32.3% | 2.35 -36.3% | 2.22 -39.8% | |
| 41 | 4.10 +11.0% | 3.73 +0.9% | 3.42 -7.5% | 3.15 -14.6% | 2.93 -20.7% | 2.73 -26.0% | 2.56 -30.6% | 2.41 -34.7% | 2.28 -38.3% | |
| 42 | 4.20 +13.7% | 3.82 +3.4% | 3.50 -5.2% | 3.23 -12.5% | 3.00 -18.8% | 2.80 -24.2% | 2.62 -28.9% | 2.47 -33.1% | 2.33 -36.8% | |
| 43 | 4.30 +16.5% | 3.91 +5.9% | 3.58 -3.0% | 3.31 -10.4% | 3.07 -16.8% | 2.87 -22.4% | 2.69 -27.2% | 2.53 -31.5% | 2.39 -35.3% | |
| 44 | 4.40 +19.2% | 4.00 +8.3% | 3.67 -0.7% | 3.38 -8.3% | 3.14 -14.9% | 2.93 -20.6% | 2.75 -25.5% | 2.59 -29.9% | 2.44 -33.8% | |
| 45 | 4.50 +21.9% | 4.09 +10.8% | 3.75 +1.6% | 3.46 -6.2% | 3.21 -12.9% | 3.00 -18.8% | 2.81 -23.8% | 2.65 -28.3% | 2.50 -32.3% | |
| 46 | 4.60 +24.6% | 4.18 +13.3% | 3.83 +3.8% | 3.54 -4.2% | 3.29 -11.0% | 3.07 -16.9% | 2.88 -22.1% | 2.71 -26.7% | 2.56 -30.8% | |
| 47 | 4.70 +27.3% | 4.27 +15.7% | 3.92 +6.1% | 3.62 -2.1% | 3.36 -9.1% | 3.13 -15.1% | 2.94 -20.4% | 2.76 -25.1% | 2.61 -29.3% | |
| 48 | 4.80 +30.0% | 4.36 +18.2% | 4.00 +8.3% | 3.69 standard | 3.43 -7.1% | 3.20 -13.3% | 3.00 -18.8% | 2.82 -23.5% | 2.67 -27.8% | |
| 49 | 4.90 +32.7% | 4.45 +20.6% | 4.08 +10.6% | 3.77 +2.1% | 3.50 -5.2% | 3.27 -11.5% | 3.06 -17.1% | 2.88 -21.9% | 2.72 -26.3% | |
| 50 | 5.00 +35.4% | 4.55 +23.1% | 4.17 +12.8% | 3.85 +4.2% | 3.57 -3.3% | 3.33 -9.7% | 3.12 -15.4% | 2.94 -20.3% | 2.78 -24.8% | |
| 51 | 5.10 +38.1% | 4.64 +25.6% | 4.25 +15.1% | 3.92 +6.2% | 3.64 -1.3% | 3.40 -7.9% | 3.19 -13.7% | 3.00 -18.8% | 2.83 -23.3% | |
| 52 | 5.20 +40.8% | 4.73 +28.0% | 4.33 +17.4% | 4.00 +8.3% | 3.71 +0.6% | 3.47 -6.1% | 3.25 -12.0% | 3.06 -17.2% | 2.89 -21.8% | |
Specifications
| Manufacturer | JT Sprockets |
|---|---|
| Chain pitch | 520 |
| Type | Countershaft |
| Position | Front |
| Units | Each |
| Number of teeth | 10 |
| Material | Steel |
| Material | Steel |
| Position | Front |
| Units | Each |
| Chain pitch | 520 |
| Type | Countershaft |
| Number of teeth | 11 |
| Chain pitch | 520 |
| Number of teeth | 12 |
| Type | Countershaft |
| Position | Front |
| Units | Each |
| Material | Steel |
| Material | Steel |
| Position | Front |
| Type | Countershaft |
| Units | Each |
| Chain pitch | 520 |
| Number of teeth | 13 |
| Material | Steel |
| Units | Each |
| Chain pitch | 520 |
| Number of teeth | 15 |
| Type | Countershaft |
| Position | Front |
| Color | Natural |
| Material | Chromoly Steel |
| Position | Front |
| Units | Each |
| Chain pitch | 520 |
| Number of teeth | 18 |
| Type | Countershaft |