Stock

Stealth

Stealth

Application

Year

Gearing

C/S Part #

Range

Rear Part # 

Range

Chain

All 125 to 600 Models

91-07

ST1901

12-16

ST990

38-52

520/114

All 620 to 640 Models

94-07

ST1902

13-17

ST990

38-52

520/114

950 Super Moto

05-07

17/41

ST1904

16-17

ST899

38-42

525/112

950 Super Duke

06-07

17/38

ST1904

16-17

ST899

38-42

525/110

950 /R  Super Enduro

2007

17/42

ST1904

16-17

ST899

38-42

525/116

950 Adventure

03-07

17/42

ST1904

16-17

ST899

38-42

525/118

990 Super Duke

04-07

17/38

ST1904

16-17

ST899

38-42

525/116