JT Sprockets

Online Catalogue

Kawasaki KX80 Y1-Y3 Big Wheel >>> 428 Chain Conversion

1998 to 2000

Front Sprocket

Steel Front Sprocket

Part Number: JTF555

Teeth: 13

Available Sizes: 13, 14, 15

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR462

Teeth: 51

Available Sizes: 49, 50, 51, 52, 54

Aluminium Rear Race Sprocket

Part Number: JTA462

Teeth: 51

Available Sizes: 49, 51, 52, 54

Drive Chain

Pitch: 428

Length: 130

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 Sprocket493.77
-3.9%
3.50
-10.8%
3.27
-16.7%
503.85
-2.0%
3.57
-9.0%
3.33
-15.0%
513.92
standard
3.64
-7.1%
3.40
-13.3%
524.00
+2.0%
3.71
-5.3%
3.47
-11.6%
544.15
+5.9%
3.86
-1.7%
3.60
-8.2%

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)