JT Sprockets

Online Catalogue

Suzuki GS125 (Drum Brake)

1979 to 1982

Front Sprocket

Steel Front Sprocket

Part Number: JTF426

Teeth: 14

Available Sizes: 11, 12, 13, 14, 15, 16

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR810

Teeth: 42

Available Sizes: 36, 37, 38, 41, 42, 43, 46, 47, 48, 49, 50

Drive Chain

Pitch: 428

Length: 116

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
111213141516
Rear Sprocket363.27
+9.1%
3.00
standard
2.77
-7.7%
2.57
-14.3%
2.40
-20.0%
2.25
-25.0%
373.36
+12.1%
3.08
+2.8%
2.85
-5.1%
2.64
-11.9%
2.47
-17.8%
2.31
-22.9%
383.45
+15.2%
3.17
+5.6%
2.92
-2.6%
2.71
-9.5%
2.53
-15.6%
2.38
-20.8%
413.73
+24.2%
3.42
+13.9%
3.15
+5.1%
2.93
-2.4%
2.73
-8.9%
2.56
-14.6%
423.82
+27.3%
3.50
+16.7%
3.23
+7.7%
3.00
standard
2.80
-6.7%
2.62
-12.5%
433.91
+30.3%
3.58
+19.4%
3.31
+10.3%
3.07
+2.4%
2.87
-4.4%
2.69
-10.4%
464.18
+39.4%
3.83
+27.8%
3.54
+17.9%
3.29
+9.5%
3.07
+2.2%
2.88
-4.2%
474.27
+42.4%
3.92
+30.6%
3.62
+20.5%
3.36
+11.9%
3.13
+4.4%
2.94
-2.1%
484.36
+45.5%
4.00
+33.3%
3.69
+23.1%
3.43
+14.3%
3.20
+6.7%
3.00
standard
494.45
+48.5%
4.08
+36.1%
3.77
+25.6%
3.50
+16.7%
3.27
+8.9%
3.06
+2.1%
504.55
+51.5%
4.17
+38.9%
3.85
+28.2%
3.57
+19.0%
3.33
+11.1%
3.12
+4.2%

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)