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Supersprox-Yamaha Off Road

supersprox-yamaha-street
Tested by thousands of riders in all conditions.

Why are Supersprox - Stealth sprockets better than Aluminum sprockets?

Sprockets made from aluminium are light, their tooth profile will change very quickly because of wear.
Slightly worn sprocket will not engage with the chain properly and it will cause drag.
Chain drag will drain power from your bike.
Supersprox - Stealth carbon steel teeth will last at least 3 times longer than 7075 aluminium sprocket teeth, so your drive system will last longer and run more efficiently.
Add to this the Supersprox unique tooth design, which helps the chain stay in contact for longer and you have a fantastic life versus weight combination.

European patent application number: 03792104.6, PCT #WO2004018902
USA patent pending.
Supersprox - Stealth Sprockets - YAMAHA - OFF-ROAD Bikes
Supersprox - Stealth long lasting and
light weight sprocket combination of steel and lightweight aluminum
utilises the best of both materials
The most technologically advanced sprockets in the world.
 
F
Motorcycle
Gearbox Sprocket
Rear Sprocket
Chain
Year
Model
Part #
Standard teeth
Teeth range
Part #
Standard teeth
Teeth range
Type
1993-01 YZ 80  
14
47
1993-01 YZ 80 Big Wheel  
14
52
2002-08 YZ 85  
1999-04 YZ 125  
2005-08 YZ 125  
1999-08 YZ 250
2001-06 YZ 250 F
1590
13
12-14
245
48
40, 42-52
520
1590
13
12-14
245
49
40, 42-52
520
2001-06
WR 250 F
2007 WR 250 F
2008 WR 250 X
1999 YZ 400
1999-00 WR 400 F
2001-02 WR 426 F
1999-02 YZ 426 F
2003-04 YZ 450 F
565
14
13-15
245
48
40, 42-52
2005 YZ 450 F
565
14
13-15
245
51
40, 42-52
2006-08 YZ 450 F
565
13
13-15
245
49
40, 42-52
2003-08 WR 450 F
   
    For Sprocket and Chain Maintenance details click here
    SUPERSPROX Gearing Chart