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Selected Model:
Polaris 250 Scrambler
1985 to 1986
Front Sprocket: JTF 3221.13
Rear Sprocket: JTR 1478.42
Recommended Chain: : 520 / 74
Front sprocket available in: 10, 11, 12, 13 teeth
Rear sprocket available in: 30, 34, 36, 38, 40, 42, 43 teeth
Please click here for a gear ratio chart
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Very important: Please note that the chain shown in this listing is for size reference only. For the correct chain type and grade, please refer to the vehicle's manufacturer manual.
Gear Ratio
| 10 | 11 | 12 | 13 | 43 | 4.30 | 3.91 | 3.58 | 3.31 | 42 | 4.20 | 3.82 | 3.50 | 3.23 | 40 | 4.00 | 3.64 | 3.33 | 3.08 | 38 | 3.80 | 3.45 | 3.17 | 2.92 | 36 | 3.60 | 3.27 | 3.00 | 2.77 | 34 | 3.40 | 3.09 | 2.83 | 2.62 | 30 | 3.00 | 2.73 | 2.50 | 2.31 |