Online Catalogue

Kawasaki KX125 A7

1981

Front Sprocket

Steel Front Sprocket

Part Number: JTF422

Teeth: 12

Available Sizes: 12, 13, 14, 15

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR460

Teeth: 53

Available Sizes: 39, 42, 43, 44, 45, 46, 47, 48, 50, 52, 53

Lightweight Self-Cleaning Rear Sprocket

Part Number: JTR460SC

Teeth: 53 Check Availability

Available Sizes: 48, 49, 50, 51

Racelite Aluminium Rear Race Sprocket

Part Number: JTA460BLK

Teeth: 53 Check Availability

Available Sizes: 46, 47, 48, 49, 50, 51, 52

Drive Chain

Pitch: 520

Length: 118

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

Teeth		Front Sprocket
Teeth		12
Rear Sprocket	48	4.00 -9.4%
	49	4.08 -7.5%
	50	4.17 -5.7%
	51	4.25 -3.8%
	53	4.42 standard

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)