Online Catalogue

Ducati 1103 Streetfighter V4

2021

Front Sprocket

OE Type Rubber Cushioned Front Sprocket

Part Number: JTF749RB

Teeth: 15

Available Sizes: 15, 16

Steel Front Sprocket

Part Number: JTF749

Teeth: 15

Available Sizes: 14, 15, 16

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR761

Teeth: 42 Check Availability

Available Sizes: 38, 39, 41, 43

To be fit with JTA770B sprocket adapter

Aluminium Rear Race Sprocket

Part Number: JTA761

Teeth: 42 Check Availability

Available Sizes: 38

To be fit with JTA770B sprocket adapter

Racelite Aluminium Rear Race Sprocket

Part Number: JTA761BLK

Teeth: 42 Check Availability

Available Sizes: 38

To be fit with JTA770B sprocket adapter

Drive Chain

Pitch: 525

Length: 116

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

Teeth		Front Sprocket
Teeth		14	15	16
Rear Sprocket	38	2.71 -3.1%	2.53 -9.5%	2.38 -15.2%
Rear Sprocket	42	3.00 +7.1%	2.80 standard	2.62 -6.2%

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)