JT Sprockets

Online Catalogue

Yamaha SZR660

1996 to 1998

Front Sprocket

Steel Front Sprocket

Part Number: JTF577

Teeth: 15

Available Sizes: 14, 15, 16

OE Type Rubber Cushioned Front Sprocket

Part Number: JTF577RB

Teeth: 15

Available Sizes: 15

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR846

Teeth: 39

Available Sizes: 37, 39, 40, 41, 43, 45

Drive Chain

Pitch: 520

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
141516
Rear Sprocket372.64
+1.6%		2.47
-5.1%		2.31
-11.1%
392.79
+7.1%		2.60
standard		2.44
-6.2%
402.86
+9.9%		2.67
+2.6%		2.50
-3.8%
412.93
+12.6%		2.73
+5.1%		2.56
-1.4%
433.07
+18.1%		2.87
+10.3%		2.69
+3.4%
453.21
+23.6%		3.00
+15.4%		2.81
+8.2%

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)