JT Sprockets

Online Catalogue

Kawasaki KX125 A3-A5

1977 to 1979

Front Sprocket

Steel Front Sprocket

Part Number: JTF418

Teeth: 14

Available Sizes: 13, 14, 15

Rear Sprocket

Part Number: TBA

Teeth: 60

Available Sizes:

Drive Chain

Pitch: 428

Length: 118

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
131415
Rear Sprocket604.62
+7.7%
4.29
standard
4.00
-6.7%

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)