JT Sprockets

Online Catalogue

Yamaha IT125 G,H — USA

1980 to 1981

Front Sprocket

Steel Front Sprocket

Part Number: JTF422

Teeth: 12

Available Sizes: 12, 13, 14, 15

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR845

Teeth: 46

Available Sizes: 40, 41, 43, 45, 46, 47, 48, 49

Drive Chain

Pitch: 520

Length: 100

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

TeethFront Sprocket
12
Rear Sprocket463.83
standard

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)