JT Sprockets

Online Catalogue

Kawasaki EX250 E1-E2 Ninja — USA

1986 to 1987

Front Sprocket

Steel Front Sprocket

Part Number: JTF516

Teeth: 14

Available Sizes: 13, 14, 15, 16

OE Type Rubber Cushioned Front Sprocket

Part Number: JTF516RB

Teeth: 14 Check Availability

Available Sizes: 16

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR1486

Teeth: 42

Available Sizes: 40, 41, 42, 44

Drive Chain

Pitch: 520

Length: 104

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
13141516
Rear Sprocket403.08
+2.6%
2.86
-4.8%
2.67
-11.1%
2.50
-16.7%
413.15
+5.1%
2.93
-2.4%
2.73
-8.9%
2.56
-14.6%
423.23
+7.7%
3.00
standard
2.80
-6.7%
2.62
-12.5%
443.38
+12.8%
3.14
+4.8%
2.93
-2.2%
2.75
-8.3%

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)