1983 - 1989
YAMAHA YZ 490
Aluminum rear sprocket - 49 teeth, silver
| MOOSE RACING
MOOSE RACING
Fits to:
YAMAHA YZ 490 [1983 - 1989]
1982 - 1990 YAMAHA YZ 490
Transmision ratio:
| 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | ||
| 38 | 3.80 +6.4% | 3.45 -3.3% | 3.17 -11.3% | 2.92 -18.2% | 2.71 -24.0% | 2.53 -29.1% | 2.38 -33.5% | 2.24 -37.4% | 2.11 -40.9% | |
| 40 | 4.00 +12.0% | 3.64 +1.8% | 3.33 -6.7% | 3.08 -13.8% | 2.86 -20.0% | 2.67 -25.3% | 2.50 -30.0% | 2.35 -34.1% | 2.22 -37.8% | |
| 41 | 4.10 +14.8% | 3.73 +4.4% | 3.42 -4.3% | 3.15 -11.7% | 2.93 -18.0% | 2.73 -23.5% | 2.56 -28.2% | 2.41 -32.5% | 2.28 -36.2% | |
| 42 | 4.20 +17.6% | 3.82 +6.9% | 3.50 -2.0% | 3.23 -9.5% | 3.00 -16.0% | 2.80 -21.6% | 2.62 -26.5% | 2.47 -30.8% | 2.33 -34.7% | |
| 43 | 4.30 +20.4% | 3.91 +9.5% | 3.58 +0.3% | 3.31 -7.4% | 3.07 -14.0% | 2.87 -19.7% | 2.69 -24.8% | 2.53 -29.2% | 2.39 -33.1% | |
| 44 | 4.40 +23.2% | 4.00 +12.0% | 3.67 +2.7% | 3.38 -5.2% | 3.14 -12.0% | 2.93 -17.9% | 2.75 -23.0% | 2.59 -27.5% | 2.44 -31.6% | |
| 45 | 4.50 +26.0% | 4.09 +14.5% | 3.75 +5.0% | 3.46 -3.1% | 3.21 -10.0% | 3.00 -16.0% | 2.81 -21.3% | 2.65 -25.9% | 2.50 -30.0% | |
| 46 | 4.60 +28.8% | 4.18 +17.1% | 3.83 +7.3% | 3.54 -0.9% | 3.29 -8.0% | 3.07 -14.1% | 2.88 -19.5% | 2.71 -24.2% | 2.56 -28.4% | |
| 47 | 4.70 +31.6% | 4.27 +19.6% | 3.92 +9.7% | 3.62 +1.2% | 3.36 -6.0% | 3.13 -12.3% | 2.94 -17.8% | 2.76 -22.6% | 2.61 -26.9% | |
| 48 | 4.80 +34.4% | 4.36 +22.2% | 4.00 +12.0% | 3.69 +3.4% | 3.43 -4.0% | 3.20 -10.4% | 3.00 -16.0% | 2.82 -20.9% | 2.67 -25.3% | |
| 49 | 4.90 +37.2% | 4.45 +24.7% | 4.08 +14.3% | 3.77 +5.5% | 3.50 -2.0% | 3.27 -8.5% | 3.06 -14.2% | 2.88 -19.3% | 2.72 -23.8% | |
| 50 | 5.00 +40.0% | 4.55 +27.3% | 4.17 +16.7% | 3.85 +7.7% | 3.57 standard | 3.33 -6.7% | 3.12 -12.5% | 2.94 -17.6% | 2.78 -22.2% | |
| 51 | 5.10 +42.8% | 4.64 +29.8% | 4.25 +19.0% | 3.92 +9.8% | 3.64 +2.0% | 3.40 -4.8% | 3.19 -10.8% | 3.00 -16.0% | 2.83 -20.7% | |
| 52 | 5.20 +45.6% | 4.73 +32.4% | 4.33 +21.3% | 4.00 +12.0% | 3.71 +4.0% | 3.47 -2.9% | 3.25 -9.0% | 3.06 -14.4% | 2.89 -19.1% | |
Specifications
| Manufacturer | MOOSE RACING |
|---|---|
| Number of teeth | 49 |
| Chain pitch | 520 |
| Color | Silver |
| Material | Aluminum |
| Position | Rear |
| Type | Drive |
| Units | Each |
Product description
The 7075 T651 aluminum we use for these sprockets receives an extra tempering which reduces distortion and provides optimal thickness vs. typically thinner 7075 T6 sprockets 100% machined, no stamping or grinding Optimal tooth thickness results in maximum tooth and chain contact