JT Sprockets

Online Catalogue

Yamaha YFZ450 R-D,F,E,F,G,H,J,K Special Edition

2013 to 2019

Front Sprocket

Steel Front Sprocket

Part Number: JTF1592

Teeth: 14

Available Sizes: 13, 14, 15, 16

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR1857

Teeth: 38

Available Sizes: 36, 37, 38, 39, 40, 42, 45, 47

Drive Chain

Pitch: 520

Length: 98

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
13141516
Rear Sprocket362.77
+2.0%
2.57
-5.3%
2.40
-11.6%
2.25
-17.1%
372.85
+4.9%
2.64
-2.6%
2.47
-9.1%
2.31
-14.8%
382.92
+7.7%
2.71
standard
2.53
-6.7%
2.38
-12.5%
393.00
+10.5%
2.79
+2.6%
2.60
-4.2%
2.44
-10.2%
403.08
+13.4%
2.86
+5.3%
2.67
-1.8%
2.50
-7.9%
423.23
+19.0%
3.00
+10.5%
2.80
+3.2%
2.62
-3.3%
453.46
+27.5%
3.21
+18.4%
3.00
+10.5%
2.81
+3.6%
473.62
+33.2%
3.36
+23.7%
3.13
+15.4%
2.94
+8.2%

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)