Selected Model:

Polaris 250 Trail Blazer W7221

1991

Front Sprocket: JTF 3221.13

Rear Sprocket: JTR 1478.34

Recommended Chain: : 520 / 84


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



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

Full Gear Ratio Chart (pdf)

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

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