JT Sprockets

Online Catalogue

Yamaha GT MX D/E/F — USA

Off Road

1977 to 1979
Front Sprocket
Part No.Teeth
JTF56314
Available Sizes
11, 12, 13, 14, 15, 16, 17
Rear Sprocket
Part No.Teeth
JTR83241
Available Sizes
30, 32, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52
Chain
PitchLength
420106

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 Chart

Full Gear Ratio Chart (pdf)

Teeth11121314151617
302.732.502.312.142.001.881.76
322.912.672.462.292.132.001.88
373.363.082.852.642.472.312.18
383.453.172.922.712.532.382.24
393.553.253.002.792.602.442.29
403.643.333.082.862.672.502.35
413.733.423.152.932.732.562.41
423.823.503.233.002.802.622.47
433.913.583.313.072.872.692.53
444.003.673.383.142.932.752.59
454.093.753.463.213.002.812.65
464.183.833.543.293.072.882.71
474.273.923.623.363.132.942.76
484.364.003.693.433.203.002.82
494.454.083.773.503.273.062.88
504.554.173.853.573.333.122.94
514.644.253.923.643.403.193.00
524.734.334.003.713.473.253.06