JT Sprockets

Online Catalogue

Aprilia 50 RS

1999 to 2005

Front Sprocket

Steel Front Sprocket

Part Number: JTF1120

Teeth: 12

Available Sizes: 10, 11, 12, 13, 14, 15

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR23

Teeth: 47

Available Sizes: 47

Drive Chain

Pitch: 420

Length: 122

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
12
Rear Sprocket473.92
standard

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)