JT Sprockets

Online Catalogue

Yamaha MT-09 (MTN850 A) (1RC,2SC)

2014 to 2019

Front Sprocket

Steel Front Sprocket

Part Number: JTF1591

Teeth: 16

Available Sizes: 15, 16

OE Type Rubber Cushioned Front Sprocket

Part Number: JTF1591RB

Teeth: 16

Available Sizes: 15, 16

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR1876

Teeth: 45

Available Sizes: 43, 44, 45, 46

Drive Chain

Pitch: 525

Length: 110

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
1516
Rear Sprocket432.87
+1.9%
2.69
-4.4%
442.93
+4.3%
2.75
-2.2%
453.00
+6.7%
2.81
standard
463.07
+9.0%
2.88
+2.2%

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)