Online Catalogue

Aprilia 125 ST

1983

Front Sprocket

Steel Front Sprocket

Part Number: JTF800

Teeth: 13 Check Availability

Available Sizes:

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR13

Teeth: 41

Available Sizes: 39, 41, 44

Drive Chain

Pitch: 520

Length: 110

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

Teeth		Front Sprocket
Teeth		13
Rear Sprocket	41	3.15 standard

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)