JT Sprockets

Online Catalogue

CPI 50 SM

2006 to 2012

Front Sprocket

Steel Front Sprocket

Part Number: JTF1120

Teeth: 11

Available Sizes: 10, 11, 12, 13, 14, 15

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR1079

Teeth: 62

Available Sizes: 53, 62

Drive Chain

Pitch: 420

Length: 136

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
101112131415
Rear Sprocket535.30
-6.0%
4.82
-14.5%
4.42
-21.6%
4.08
-27.7%
3.79
-32.8%
3.53
-37.3%
626.20
+10.0%
5.64
standard
5.17
-8.3%
4.77
-15.4%
4.43
-21.4%
4.13
-26.7%

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)