JT Sprockets

Online Catalogue

Yamaha XS250 — France

Front Sprocket

Steel Front Sprocket

Part Number: JTF567

Teeth: 16

Available Sizes: 16, 17, 18

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR854

Teeth: 39

Available Sizes: 36, 37, 38, 39, 41, 43

Drive Chain

Pitch: 530

Length: 100

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
161718
Rear Sprocket362.25
-7.7%
2.12
-13.1%
2.00
-17.9%
372.31
-5.1%
2.18
-10.7%
2.06
-15.7%
382.38
-2.6%
2.24
-8.3%
2.11
-13.4%
392.44
standard
2.29
-5.9%
2.17
-11.1%
412.56
+5.1%
2.41
-1.1%
2.28
-6.6%
432.69
+10.3%
2.53
+3.8%
2.39
-2.0%

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)