JT Sprockets

Online Catalogue

Yamaha RD80 MX — Europe

1981 to 1982

Front Sprocket

Steel Front Sprocket

Part Number: JTF561

Teeth: 15

Available Sizes: 14, 15, 16

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR834

Teeth: 41

Available Sizes: 25, 26, 28, 30, 31, 32, 35, 36, 37, 38, 39, 41, 43, 45, 48, 52

Drive Chain

Pitch: 420

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

TeethFront Sprocket
15
Rear Sprocket412.73
standard

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)