JT Sprockets

Online Catalogue

Yamaha LB80 II AD,AE — USA

1977 to 1978

Front Sprocket

Steel Front Sprocket

Part Number: JTF546

Teeth: 14

Available Sizes: 12, 13, 14, 15, 16

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR834

Teeth: 31

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

Drive Chain

Pitch: 420

Length: 88

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 Sprocket312.21
standard

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)