JT Sprockets

Online Catalogue

Honda C100 Astra — Indonesia

1991 to 1998

Front Sprocket

Steel Front Sprocket

Part Number: JTF274

Teeth: 14

Available Sizes: 13, 14, 15

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR263

Teeth: 36

Available Sizes: 34, 36, 38, 40, 42, 45

Drive Chain

Pitch: 428

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
131415
Rear Sprocket342.62
+1.7%
2.43
-5.6%
2.27
-11.9%
362.77
+7.7%
2.57
standard
2.40
-6.7%
382.92
+13.7%
2.71
+5.6%
2.53
-1.5%
403.08
+19.7%
2.86
+11.1%
2.67
+3.7%
423.23
+25.6%
3.00
+16.7%
2.80
+8.9%
453.46
+34.6%
3.21
+25.0%
3.00
+16.7%

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)