Steel crown with number of teeth choices for 530 chain (like the origin) for your big cube YAMAHA. Very good quality, made in France in the best steels! Originally, motorcycles like the YAMAHA MT 10 are equipped with a crown of 43 teeth. The larger the crown, the more force and acceleration is achieved despite peak speed. Conversely, the more you put a small crown, the more you increase the top speed despite the force and acceleration!
 

 
Mounts on :
 
SUZUKI GSX R (K9 / L0) 1000 2009-2010 
 SUZUKI GSX R (L1) 1000 2011-2011 
 YAMAHA YZF R7 (OW02) 750 1999-2002 
 YAMAHA MT10 (RN451) 1000 2016-2016 
 YAMAHA MT10D (RN455) 1000 2017-2017 
 YAMAHA YZF R1 (RN011) (4XV) 1000 1998-1999 
 YAMAHA YZF R1 (RN041) (5JD) 1000 2000-2001 
 YAMAHA YZF R1 (RN091) (5PW) 1000 2002-2003