KTM 4-STROKE
MODEL
YEARS
PISTON PART # WÖSSNER COMPR. RATIO OEM COMPR. RATIO
PISTON SIZE
OVERSIZE
RING SET
SX 450 RACING
2003-2006
SM-R 450
2004-2007
8571DA
13.0:1
12.0:1
94.96
STD
RIK95.00/2
XC 450
2007
SX-F 450
2007-2012
8665DA
96.96
STD
RIK97.00/2
SXS-F 450
2007-2008
8665DB
96.97
+0.01
RIK97.00/2
12.5:1
12.5:1
XC-F 450
2007-2010
8665DC
96.98
+0.02
RIK97.00/2
SM-R 450
2008-2012
SX-F 450
2007-2012
SXS-F 450
2007-2008
8715DA
13.5:1
12.5:1
96.96
STD
RIK97.00/2
XC-F 450
2007-2010
SM-R 450
2008-2012
450 EXC-R
2008 - 2011
8707DA
94.95
STD
RIK95.00/2
450 XCR-W
2008 - 2009
8707DB
94.96
+0.01
RIK95.00/2
11.9:1
11.9:1
450 XC-W CHAMPION EDITION
2010
8707DC
94.97
+0.02
RIK95.00/2
450 XC-W SIX DAYS
2010 - 2011
450 EXC
2012 - 2016
8898DA
94.95
STD
RIK95.00/2
450 EXC-F
2017 - 2021
8898DB
94.96
+0.01
RIK95.00/2
11.8:1
11.8:1
450 XC-W
2012 - 2013
8898DC
94.97
+0.02
RIK95.00/2
200
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