JT Sprockets

Online Catalogue

Honda CBR1000 FH,FJ Hurricane (SC21)

1987 to 1988

Front Sprocket

Steel Front Sprocket

Part Number: JTF339

Teeth: 17

Available Sizes: 15, 16, 17, 18

OE Type Rubber Cushioned Front Sprocket

Part Number: JTF339RB

Teeth: 17

Available Sizes: 16, 17, 18

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR1334

Teeth: 43

Available Sizes: 34, 36, 39, 40, 41, 42, 43, 44, 45, 46, 47

Drive Chain

Pitch: 530

Length: 114

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
15161718
Rear Sprocket342.27
-10.4%
2.12
-16.0%
2.00
-20.9%
1.89
-25.3%
362.40
-5.1%
2.25
-11.0%
2.12
-16.3%
2.00
-20.9%
392.60
+2.8%
2.44
-3.6%
2.29
-9.3%
2.17
-14.3%
402.67
+5.4%
2.50
-1.2%
2.35
-7.0%
2.22
-12.1%
412.73
+8.1%
2.56
+1.3%
2.41
-4.7%
2.28
-9.9%
422.80
+10.7%
2.62
+3.8%
2.47
-2.3%
2.33
-7.8%
432.87
+13.3%
2.69
+6.2%
2.53
standard
2.39
-5.6%
442.93
+16.0%
2.75
+8.7%
2.59
+2.3%
2.44
-3.4%
453.00
+18.6%
2.81
+11.2%
2.65
+4.7%
2.50
-1.2%
463.07
+21.2%
2.88
+13.7%
2.71
+7.0%
2.56
+1.0%
473.13
+23.9%
2.94
+16.1%
2.76
+9.3%
2.61
+3.2%

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)