JT Sprockets

Online Catalogue

Kawasaki KE250 B1-B3 — USA

1977 to 1979

Front Sprocket

Steel Front Sprocket

Part Number: JTF507

Teeth: 14

Available Sizes: 13, 14, 15

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR1458

Teeth: 39 Check Availability

Available Sizes: 40

Drive Chain

Pitch: 520

Length: 98

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 Sprocket393.00
+7.7%
2.79
standard
2.60
-6.7%
403.08
+10.5%
2.86
+2.6%
2.67
-4.3%

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)