KTM 4-STROKE
MODEL
YEARS
PISTON PART # WÖSSNER COMPR. RATIO OEM COMPR. RATIO
PISTON SIZE
OVERSIZE
RING SET
8885DA
87.95
STD
TPR88.00/2
8885DB
87.96
+0.01
TPR88.00/2
EXC-F 350
2012-2016
8885DC
12.3:1
12.3:1
87.97
+0.02
TPR88.00/2
8941DA
87.95
STD
TPR88.00/2
8941DB
87.96
+0.01
TPR88.00/2
EXC-F 350
2017-2019
8941DC
12.5:1
12.3:1
87.97
+0.02
TPR88.00/2
8990DA
87.96
STD
TPR88.00/2
8990DB
87.97
+0.01
TPR88.00/2
EXC-F 350
2020-2022
8990DC
13.7:1
13.5:1
87.98
+0.02
TPR88.00/2
350 LC 4
1992-1994
8506DA
88.94
STD
890XSY-3
400 LC 4
1997
8506DB
88.95
+0.01
890XSY-3
10.0:1
10.0:1
8506DC
88.96
+0.02
890XSY-3
400 LC 4
1993-1996
8520DA
94.94
STD
950XSY-3
600 LC 4
1988-1992
8520DB
94.95
+0.01
950XSY-3
10.8:1
10.8:1
8520DC
94.96
+0.02
950XSY-3
196
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