Kits replace the OEM valves and valve springs Steel, nitrided valves for increased durability and less wear under extreme conditions Stronger valve springs deal with the extra weight of the steel valves Springs are made from premium chrome vanadium steel for higher performance and durability at high rpm Kits contain a set of steel intake or exhaust valves plus a set of specially designed valve springs; can be installed using the OEM retainers, bases and valve seals
YAMAHA YZ 450 F 33D AMERICA 2013 |
YAMAHA YZ 450 F 33D EUROPE 2013 |
YAMAHA YZ 450 F 33D AMERICA 2012 |
YAMAHA YZ 450 F 33D EUROPE 2012 |
YAMAHA YZ 450 F 33D AMERICA 2011 |
YAMAHA YZ 450 F 33D EUROPE 2011 |
YAMAHA YZ 450 F 33D AMERICA 2010 |
YAMAHA YZ 450 F 33D EUROPE 2010 |