JT Sprockets

Online Catalogue

Ducati 998 Monster S4R Testastretta


Front Sprocket

Steel Front Sprocket

Part Number: JTF741

Teeth: 15

Available Sizes: 14, 15

OE Type Rubber Cushioned Front Sprocket

Part Number: JTF741RB

Teeth: 15

Available Sizes: 15

Rear Sprocket

Part Number: TBA

Teeth: 43

Available Sizes:

Drive Chain

Pitch: 525

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 Sprocket433.07

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)