Image note: Representative supplier image of the 31-113 sprocket family. The photograph shows 31-113-14; tooth count, finish and brand markings may differ. The supplied item is 31-113-15 with 15 teeth.
JT Front drive sprocket with 15 teeth, suitable for a matching 520-pitch chain. Replacement part number 31-113-15.
Specifications
Part number: 31-113-15
Position: Front
Tooth count: 15 teeth
Sprocket family: 31-113
Chain size: 520
Fitment and maintenance
Match the sprocket family and mounting pattern to the motorcycle model and year. Confirm chain size, tooth count and clearance before ordering. A change in tooth count changes the final-drive gearing and can affect the chain length and adjustment required.
Inspect the drive chain and both sprockets together; worn components can shorten the service life of replacement parts. Install to the motorcycle manufacturer's assembly and torque specifications, then check chain adjustment and lubrication.