JT Sprockets

Online Catalogue

Yamaha YZ250 FX-F,G,H,J — USA

2015 to 2018

Front Sprocket

Part Number: JTF1590SC

Teeth: 13

Available Sizes: 13, 14

JTF1590SC is a Lightweight Self-Cleaning sprocket

Rear Sprocket

Part Number: JTR251

Teeth: 51

Available Sizes: 46, 48, 49, 50, 51

Aluminium Rear Sprocket

Part Number: JTA251

Teeth: 51

Available Sizes: 48, 49, 50, 51, 52

Drive Chain

Pitch: 520

Length: 114

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

Full Gear Ratio Chart (pdf)

Teeth1314
463.543.29
483.693.43
493.773.50
503.853.57
513.923.64
524.003.71