JT Sprockets

Online Catalogue

Yamaha XS650 S E,F,G,H,J,K Heritage — USA

1978 to 1983

Front Sprocket

Steel Front Sprocket

Part Number: JTF568

Teeth: 17

Available Sizes: 15, 16, 17, 18

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR850

Teeth: 34

Available Sizes: 31, 32, 33, 34

Drive Chain

Pitch: 530

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
15161718
Rear Sprocket312.07
+3.3%
1.94
-3.1%
1.82
-8.8%
1.72
-13.9%
322.13
+6.7%
2.00
standard
1.88
-5.9%
1.78
-11.1%
332.20
+10.0%
2.06
+3.1%
1.94
-2.9%
1.83
-8.3%
342.27
+13.3%
2.12
+6.2%
2.00
standard
1.89
-5.6%

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)