JT Sprockets

Online Catalogue

BMW F850 GS Adventure

2019

Front Sprocket

Steel Front Sprocket

Part Number: JTF704

Teeth: 17

Available Sizes: 15, 16, 17

OE Type Rubber Cushioned Front Sprocket

Part Number: JTF704RB

Teeth: 17

Available Sizes: 16, 17

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR10

Teeth: 44

Available Sizes: 44, 45

Drive Chain

Pitch: 525

Length: 122

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
151617
Rear Sprocket442.93
+13.3%
2.75
+6.2%
2.59
standard
453.00
+15.9%
2.81
+8.7%
2.65
+2.3%

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)