JT Sprockets

Online Catalogue

Suzuki TM125 K,L,M — USA

1973 to 1975

Front Sprocket

Steel Front Sprocket

Part Number: JTF1263

Teeth: 15

Available Sizes: 11, 12, 13, 14, 15, 16, 17

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR809

Teeth: 61 Check Availability

Available Sizes: 44, 46, 47, 49, 50, 51, 53, 54, 55

Drive Chain

Pitch: 428

Length: 124

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
11121314151617
Rear Sprocket444.00
-1.6%
3.67
-9.8%
3.38
-16.8%
3.14
-22.7%
2.93
-27.9%
2.75
-32.4%
2.59
-36.4%
464.18
+2.8%
3.83
-5.7%
3.54
-13.0%
3.29
-19.2%
3.07
-24.6%
2.88
-29.3%
2.71
-33.5%
474.27
+5.1%
3.92
-3.7%
3.62
-11.1%
3.36
-17.4%
3.13
-23.0%
2.94
-27.8%
2.76
-32.0%
494.45
+9.5%
4.08
+0.4%
3.77
-7.3%
3.50
-13.9%
3.27
-19.7%
3.06
-24.7%
2.88
-29.1%
504.55
+11.8%
4.17
+2.5%
3.85
-5.4%
3.57
-12.2%
3.33
-18.0%
3.12
-23.2%
2.94
-27.7%
514.64
+14.0%
4.25
+4.5%
3.92
-3.5%
3.64
-10.4%
3.40
-16.4%
3.19
-21.6%
3.00
-26.2%
534.82
+18.5%
4.42
+8.6%
4.08
+0.3%
3.79
-6.9%
3.53
-13.1%
3.31
-18.5%
3.12
-23.3%
544.91
+20.7%
4.50
+10.7%
4.15
+2.1%
3.86
-5.2%
3.60
-11.5%
3.38
-17.0%
3.18
-21.9%
555.00
+23.0%
4.58
+12.7%
4.23
+4.0%
3.93
-3.4%
3.67
-9.8%
3.44
-15.5%
3.24
-20.4%
615.55
+36.4%
5.08
+25.0%
4.69
+15.4%
4.36
+7.1%
4.07
standard
3.81
-6.2%
3.59
-11.8%

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)