GASGAS 4-STROKE
MODEL
YEARS
PISTON PART # WÖSSNER COMPR. RATIO OEM COMPR. RATIO
PISTON SIZE
OVERSIZE
RING SET
EC 450
8585DA
94.95
STD
RIK95.00
FSE 450
8585DB
94.96
+0.01
RIK95.00
2003-2004
OEM
OEM
8585DC
94.97
+0.02
RIK95.00
EC 450 F
2005
8615DA
94.95
STD
RIK95.00
SM 450 R
2005
8615DB
94.96
+0.01
RIK95.00
OEM
OEM
FES 450
2005
EC 450 F
2006-2012
8638DA
96.95
STD
RIK97.00
SM 450 R
2007-2009
8638DB
96.96
+0.01
RIK97.00
OEM
OEM
FES 450
2006 - 2009
8638DC
96.97
+0.02
RIK97.00
8630DA
94.96
STD
RIK95.00/2
8630DB
94.97
+0.01
RIK95.00/2
EC 450 F
2013-2015
8630DC
12.3:1
12.3:1
94.98
+0.02
RIK95.00/2
8631DA
94.96
STD
RIK95.00/2
8631DB
94.97
+0.01
RIK95.00/2
EC 450 F
2013-2015
8631DC
13.5:1
12.3:1
94.98
+0.02
RIK95.00/2
48
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