JT Sprockets

Online Catalogue

Honda MSX125 (Grom 125)

2023

Front Sprocket

Steel Front Sprocket

Part Number: JTF249

Teeth: 15

Available Sizes: 13, 14, 15, 16

Rear Sprocket

Part Number: TBA

Teeth: 38

Available Sizes:

Drive Chain

Pitch: 420

Length: 108

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
15
Rear Sprocket382.53
standard

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)