JT Sprockets

Online Catalogue

Betamotor 125 SM M4

2006 to 2010

Front Sprocket

Steel Front Sprocket

Part Number: JTF1550

Teeth: 14

Available Sizes: 13, 14, 15

Rear Sprocket

Part Number: TBA

Teeth: 46

Available Sizes:

Drive Chain

Pitch: 428

Length: 128

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
14
Rear Sprocket463.29
standard

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)