JT Sprockets

Online Catalogue

Yamaha DT250 MX

1980 to 1982

Front Sprocket

Steel Front Sprocket

Part Number: JTF569

Teeth: 16

Available Sizes: 10, 11, 12, 13, 14, 15, 16, 17, 18

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR855

Teeth: 47

Available Sizes: 45, 46, 47, 48

Drive Chain

Pitch: 520

Length: 104

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
Rear Sprocket472.94

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)