JT Sprockets

Online Catalogue

Yamaha RS100 B/C — USA

Road

1975 to 1976
Front Sprocket
Part No.Teeth
JTF126315
Available Sizes
11, 12, 13, 14, 15, 16, 17
11 and 12 tooth versions do not feature bolt holes
Rear Sprocket
Part No.Teeth
JTR83836
Available Sizes
31, 35, 36, 37, 38, 39, 42, 43, 45, 49
Chain
PitchLength
428102

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
312.822.582.382.212.071.941.82
353.182.922.692.502.332.192.06
363.273.002.772.572.402.252.12
373.363.082.852.642.472.312.18
383.453.172.922.712.532.382.24
393.553.253.002.792.602.442.29
423.823.503.233.002.802.622.47
433.913.583.313.072.872.692.53
454.093.753.463.213.002.812.65
494.454.083.773.503.273.062.88