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WISECO offers this exhaust valve for KTM EXC, MXC, SX, XC 400, 450, 520, 525 and POLARIS OUTLAW 450, 525 1999-2011. A four-stroke engine breathes through its valves. The exhaust valves open to let the burnt gases out to the pipe, then close again.
The material is shown in the product name.
Wiseco has forged its pistons in Mentor (Ohio, USA) since 1941 and controls the whole process, from aluminium bar to the friction-reducing ArmorGlide skirt coating. Its pistons are developed with Team Honda HRC in Supercross (450 class since 2018).
Hard hot starting, valve clearance that keeps closing up or a noisy timing chain: the valve train is wearing.
Check the exact model and year of your bike in the list below before ordering.
Fits:
KTM EXC 400 2002
KTM EXC 400 2001
KTM EXC 400 2000
KTM EXC 400 1999
KTM EXC 450 2007
KTM EXC 450 2006
KTM EXC 450 2005
KTM EXC 450 2004
KTM EXC 450 2003
KTM EXC 520 2002
KTM EXC 520 2001
KTM EXC 520 2000
KTM EXC 525 2007
KTM EXC 525 2006
KTM EXC 525 2005
KTM EXC 525 2004
KTM EXC 525 2003
KTM MXC 450 2007
KTM MXC 450 2006
KTM MXC 450 2005
KTM MXC 450 2004
KTM MXC 450 2003
KTM SX 520 2002
KTM SX 520 2001
KTM SX 520 2000
KTM SX 525 2007
KTM SX 525 2006
KTM SX 525 2005
KTM SX 525 2004
KTM SX 525 2003
KTM XC 450 2009
KTM XC 450 2008
KTM XC 525 2010
KTM XC 525 2009
KTM XC 525 2008
POLARIS OUTLAW 450 2010
POLARIS OUTLAW 450 2009
POLARIS OUTLAW 450 2008
POLARIS OUTLAW 525 2011
POLARIS OUTLAW 525 2010
POLARIS OUTLAW 525 2009
POLARIS OUTLAW 525 2008
POLARIS OUTLAW 525 2007
Click on your bike to see all compatible parts.
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